Investigators in the Benoit case did not return phone calls Friday seeking further information.

On Thursday, federal agents said they had raided the west Georgia office of Dr. Phil Astin, said agent Chuvalo Truesdell, a spokesman for the Drug Enforcement Administration. No arrests were made during the raid late Wednesday into Thursday. Calls to Truesdell and Astin’s attorney about Friday’s raid were not immediately returned.

Hours before the first raid, Astin told the AP he had treated Benoit for low testosterone levels, which he said likely originated from steroid use.

Among other things, investigators were looking for Benoit’s medical records to see whether he had been prescribed steroids and, if so, whether that prescription was appropriate, according to a law enforcement official speaking on condition of anonymity because records in the case remain sealed.

Astin prescribed testosterone for Benoit, a longtime friend, in the past but would not say what, if any, medications he prescribed when Benoit visited his office June 22.

Michael Benoit, who lives near Edmonton in Ardrossan, Alberta, said the test results, which could take several weeks to be completed, “could give us closure.” He said his son had seemed fine when they spoke on Father’s Day, and had even said he regretted having to work instead of spending the day with his family.

“That really wouldn’t give you an indication of someone who would do what he did a week later,” the father said.