"investigation office" is a correct and usable phrase in written English.
It could be used to refer to a specialized office or department within a larger organization that is focused on conducting investigations. For example, "The police department has an investigation office tasked with solving major cases."
The national Serious Fraud Investigation Office is investigating as many as 53 companies, the largest of which is the Saradha Group, which collapsed in April.
He was directed instead to the criminal investigation office, where he detonated himself, killing several police officers but leaving General Raziq unhurt.
STEVEN B. WALLACE -- Director of the accident investigation office at the Federal Aviation Administration.
The German transport ministry said both the government's train accident investigation office and local prosecutors are looking into the cause of the crash.
In 2008, he retired as head of an accident investigation office at the Federal Aviation Administration, part of the Transportation Department.
The Serious Fraud Investigation Office, an agency that played a leading role in both the Satyam and Reebok cases, will be empowered to start investigations and frame charges.
The panel also found that most of the nation is served by death investigation offices that lack accreditation.
A series of suspicious fires in security and financial investigation offices has Egyptians convinced that senior officials are trying to destroy evidence.
And, for at least the past six years, AT&T has embedded its employees in federally funded drug investigation offices to analyze call records, in response to subpoenas, to track drug dealers who switch phones.
A series of suspicious fires in government security and financial investigation offices has led to speculation that senior officials are trying to destroy evidence that will implicate more of them in crimes like corruption and human rights abuses.
It is following up on its victory against the Swiss bank UBS — which handed over data on 4,450 Americans with secret offshore accounts — by opening investigation offices in Panama, China and elsewhere.
