A DeKalb County police sergeant whose wife was beaten and robbed earlier this month outside their home is now out on bail after his own trouble with the law.

Sgt. Jerry R. Banks, 42, was arrested Friday morning while police were executing a search warrant at the home of a female acquaintance.

Police were investigating reports that Cherise McMoore may have threatened someone. Detectives were at her home near Lithonia when she arrived with Banks, who police described as "her companion," DeKalb police spokeswoman Lt. Pamela Kunz said.

Banks disrupted the detective's investigation and was arrested on misdemeanor obstruction charges, Kunz said. Police would not say what he did.

He was released early Friday evening from the DeKalb County jail on $500 bond.

McMoore also was arrested, and she was charged with making terroristic threats and acts. She remains in jail.

Banks' wife was attacked in the early hours of May 13 after returning home from a night out with a friend, police said.

The wife, whose name has not been disclosed, was in critical condition at Grady Memorial Hospital at one point with cuts on the back of her head. She currently is recovering.

Banks told police he was inside the house and did not hear his wife being attacked outside. He has not been considered a suspect. No arrests have been made in that case.

According to jail and court records, Banks was arrested in 1997 on simple and family battery allegations, but the charges were dismissed.

McMoore, 33, has had several previous arrests for trespassing and theft by taking, according to court documents. Those cases appear to be unresolved.