A suspicious activity report is a report of suspicious activity that may either be a terrorist act, a criminal act, or the precursor to either a terrorist act or criminal act. A SAR may be filed by law enforcement, public safety personnel, owners of critical infrastructure or the general public. The report is the incident level event reported under the National SAR Initiative, a joint project of the United States Department of Justice

United States Department of Justice

The United States Department of Justice , is the United States federal executive department responsible for the enforcement of the law and administration of justice, equivalent to the justice or interior ministries of other countries.The Department is led by the Attorney General, who is nominated...

 and the United States Department of Homeland Security

United States Department of Homeland Security

The United States Department of Homeland Security is a cabinet department of the United States federal government, created in response to the September 11 attacks, and with the primary responsibilities of protecting the territory of the United States and protectorates from and responding to...

. It is run by the SAR Program Office in the Department of Justice.