A police sergeant who was being investigated in an FBI probe into police misconduct has committed suicide on the corner of a Southern California residential street.

The Burbank Police Department said that 50-year old Neil T. Gunn, a 22-year veteran with the department, was found dead around 11:40 a.m. Thursday.

The FBI has confirmed it is looking into possible civil rights violations by Burbank officers and the U.S. attorney's office has issued a grand jury subpoena for personnel records involving 12 members of the department, including Gunn.

The Glendale Police Department is handling the investigation into Gunn's death.