The death of a Trumbull man whose body was found with a single gunshot wound to the head in the parking lot of a Chambers Street business Monday has been classified as a suicide by officials.

The gunshot wound that claimed the life of Daniel Pirron, 57, of Avalon Gates Trumbull, was "self-inflicted," police said Tuesday based on autopsy results by the state's chief medical examiner.

Pirron's body was found about 7:30 a.m. Monday in a black SUV with out-of-state license plates and the driver-side door open, in the parking lot of Universal Thread Grinding, 30 Chambers St. A revolver was found nearby, police said.

The area immediately surrounding the scene was searched by the Fairfield Police Department's K-9 Unit for any other victims or possible suspects.

The body was sent to the chief medical examiner's office in Farmington for forensic analysis, police said, resulting in the finding that the fatal wound was self-inflicted.

Police are continuing the investigation, and anyone with information about the incident is asked to contact the Fairfield Police Detective Bureau at 203-254-4840.