U.S. federal drug agents and sheriff's deputies have raided the office of the personal physician of Canadian pro wrestler Chris Benoit, who died this week in a double-murder suicide.

Officials said theywere searching for records and other items at the Carrollton, Ga., office ofDr. Phil Astin.

The raid began Wednesday night and concluded early Thursday.

Chuvalo Truesdell, a spokesman for the Drug Enforcement Administration in Atlanta, said the warrant was obtained in connection with the investigation into the deaths of Benoit, his wife and young son.

Truesdell said he was unable to say what items were seized in the raid.

He said records were among the items being sought, but refused to be more specific.

Astin did not return repeated calls to his cellphone from the Associated Press on Thursday.

Benoit had been under the care of Astin, a longtime friend, for treatment of low testosterone levels. Astin said Wednesday the condition likely originated from previous steroid use.

Astin prescribedtestosterone for Benoit in the past but would not say what, if any, medications he prescribed when Benoit visited his office Friday.

Over the weekend, Benoit killed his wife and son, and then himself at their home in Fayetteville, Ga.

Anabolic steroids were found in Benoit's home, leading officials to wonder whether the drugs played a role in the slayings. Steroid use has been linked to paranoia, depression and violent outbursts known as "roid rage."