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Pre-trial detention

File access for the defence in pre-trial detention

File access under sections 51 and 52 StPO in pre-trial detention: how accused persons and counsel obtain access, assess restrictions and prepare the detention hearing.

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Mag. Christopher Angerer, Rechtsanwalt

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1 July 2026 · Mag. Christopher Angerer, Rechtsanwalt

The right of access to the file is a cornerstone of every effective defence in pre-trial detention. Without knowing the file, neither the grounds for detention can be targeted nor the detention hearing prepared. Under section 51 StPO the accused and their counsel have the right to inspect the investigation file and make copies.

This post explains how the right of file access is used in practice. It examines the admissible restrictions under section 52 StPO and shows how to respond to a denial. Timely access before the detention hearing under section 174 StPO is of particular importance. Remedies are available against an inadmissible denial or restriction.

Which step fits your situation?

Apply for file access, assess a restriction, prepare the hearing or appeal, what do you need?

The right of access to the file under section 51 StPO is a foundation of every effective defence in pre-trial detention. Without knowledge of the file it is hardly possible to meaningfully respond at the detention hearing. Choose what concerns you most.

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01 Question 1

What is at the centre of your case?

The right to access the file is the foundation of every defence. Whether it is about applying for access, challenging a restriction or preparing the detention hearing, choose the angle that holds in your case.

All paths at a glance

Overview of all answers.

01

The first step is a concrete written application for full file access with securing of relevant materials.

Under section 51 StPO the accused and their counsel have the right to inspect the file of the investigation and to make copies. This right exists in principle from the start of the investigation. It is a central instrument of defence to understand the evidence and to respond in a targeted way.

What to do now: First, submit a written application for full file access to the prosecution or the competent court, citing section 51 StPO. Second, after receiving access, secure all relevant materials and systematically evaluate them. Third, keep the deadlines for the detention hearing in view and insist on file access in time before the hearing date.

In depth: pre-trial detention at a glance →
02

A restriction of file access under section 52 StPO is only admissible under narrow conditions and must be specifically justified.

Under section 52 StPO access to the file can be restricted where it would jeopardise the purpose of the investigation. This restriction is only admissible under narrow conditions: it must be specifically justified, the risk must actually exist and the restriction must not go further than necessary. A blanket refusal is inadmissible.

What to do now: First, request the written justification of the restriction and check whether concrete reasons are stated. Second, assess whether the restriction is limited to specific parts of the file or is blanket in nature. Third, where the justification is insufficient or the restriction disproportionate, lodge an appeal.

In depth: grounds for pre-trial detention →
03

Timely file access is indispensable for an effective defence at the detention hearing.

The detention hearing under section 174 StPO requires an informed defence. Counsel who does not know the file cannot effectively rebut the grounds for detention. The law provides that counsel must receive file access in time to prepare for the hearing. A last-minute denial shortly before the hearing is therefore particularly problematic.

What to do now: First, apply for file access immediately upon learning of the hearing date and emphasise the urgency. Second, identify the key file parts on the detention question, in particular the grounds for detention and the existing investigation results. Third, if access is granted late or incomplete, apply for adjournment at the hearing and have this recorded in the minutes.

In depth: detention appeal →
04

Where file access is denied or unlawfully restricted, remedies are available and must be used promptly.

Where file access is fully or partially denied or unlawfully restricted, the accused and counsel have remedies available. These must be used promptly as timely file access before the detention hearing is decisive for an effective defence. A delay in file access can also be relevant to a detention appeal.

What to do now: First, document the denial in writing and record the stated reason. Second, immediately lodge a complaint against the denial or restriction, citing the violation of the right under section 51 StPO. Third, connect the detention appeal or release motion with the argument that effective defence was not possible without file access.

In depth: less restrictive measures →

The right of file access under section 51 StPO: basics and scope

Under section 51 StPO the accused and their counsel have the right to inspect the investigation file. This right includes the right to make or request copies of file parts. It exists in principle from the start of the investigation and is not limited to specific parts of the file.

The right of file access serves equality of arms. Only someone who knows what evidence exists against them and what the investigation results show can specifically contradict, name exculpatory evidence and challenge the detention grounds. In pre-trial detention this function is particularly urgent.

The application for file access is addressed to the prosecution or the competent court. It should be in writing and cite section 51 StPO as the legal basis. After receipt of the application file access is in principle to be granted without unnecessary delay.

Restriction of file access under section 52 StPO and available remedies

Under section 52 StPO access can be restricted where it would jeopardise the purpose of the investigation. This exception is to be construed narrowly. The restriction must be specifically justified: a blanket refusal without stating concrete grounds for the risk is inadmissible. Moreover the restriction must not go further than necessary to avert the risk.

In practice certain file parts may be sealed, such as ongoing covert investigations or data on other accused persons. A restriction is permissible only for the duration of the actual risk. Once that risk has passed full file access must be granted.

Remedies lie against a denial or inadmissible restriction. These must be used promptly as the time before the detention hearing is often short. The complaint should quote the concrete justification for the denial and show why it is insufficient.

File access at a glance

Entitlement, restriction and remedies

The right of file access and its limits can be mapped along a few axes. The overview shows the statutory entitlement, the admissible restrictions and the available responses.

File access under sections 51 and 52 StPO in the context of pre-trial detention
Axis Statutory entitlement Restriction and response
Legal basis Section 51 StPO: right of access and copies Section 52 StPO: restriction if investigation is at risk Appeal against inadmissible restriction
Timing From start of investigation Temporary seal during ongoing investigation Full access once seal is lifted
Scope In principle all file parts Only specifically risky parts sealed Full access once grounds for seal lapse
Detention hearing Timely access before section 174 StPO hearing Last-minute denial particularly problematic Apply for adjournment if access is late
Remedies Complaint right on denial Link to detention appeal possible Argument for release where access denied

The restriction under section 52 StPO is to be construed narrowly; a blanket refusal without specific justification is inadmissible.

Frequently asked questions

What people often ask about file access in pre-trial detention.

Does the accused always have a right to full file access? +

In principle yes. Under section 51 StPO the right of file access exists from the start of the investigation. A restriction under section 52 StPO is only admissible if it would concretely jeopardise the investigation. A blanket refusal is inadmissible.

Can file access be denied before the detention hearing? +

No, not as a blanket measure. Especially before a detention hearing under section 174 StPO timely file access is particularly important. A last-minute denial without concrete justification is challengeable. If access is granted late an adjournment should be requested at the hearing.

What to do when only parts of the file are accessible? +

First request the written justification for the partial seal. Then check whether the sealed parts actually concern ongoing investigations. Where the justification is insufficient or the seal disproportionate an appeal must be lodged.

How does missing file access affect the detention appeal? +

Missing or late file access can be an argument in the detention appeal if it impaired the possibility of an effective defence. Counsel should expressly document this and raise it in the appeal.

Can the accused themselves request file access? +

Yes. Under section 51 StPO the right of file access belongs to both the accused and their counsel. In practice counsel reviews the file and discusses the contents with the accused. The accused can however also apply for file access independently.

Topics
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