The background of a suburban Atlanta police chief is under scrutiny as authorities investigate how he shot his wife early New Year's Day.

Peachtree City Chief William McCollom called 911 and reported he accidentally shot his wife Margaret while they slept. The Georgia Bureau of Investigation is looking into the case.

McCollom has been in law enforcement for 30 years, primarily in seaside communities in South Florida.

Investigators who previously vetted McCollom for police jobs found no evidence of any criminal background or major misconduct. He was a certified police firearms trainer in Florida, and he instructed a SWAT team in combat shooting.

GBI spokeswoman Sherry Lang says McCollom's background in law enforcement will be part of the investigation.