Atlanta ? The pro wrestler who strangled his wife and son and committed suicide last month bought injectable steroids excessively, according to court papers released Monday. His doctor was charged with improperly prescribing drugs to other patients.

Dr. Phil Astin prescribed a 10-month supply of anabolic steroids to Chris Benoit every three to four weeks between May 2006 and May 2007, a Drug Enforcement Administration agent said in an affidavit filed Friday and made public Monday.

During a probe of “RX Weight Loss,” Benoit was identified as an excessive buyer of injectable steroids, the document states. Prosecutors would not say what “RX Weight Loss” is.

The affidavit also said Astin supplied various controlled substances, including injectable anabolic steroids, that were found in Benoit’s home.

Astin has not been charged with supplying steroids to Benoit, though U.S. Attorney David E. Nahmias said more charges are possible.

The anabolic steroids found in Benoit’s home led officials to wonder whether the drugs played a role in the killings that started the weekend of June 22. Some experts believe steroids can cause paranoia, depression and violent outbursts known as “roid rage.” Toxicology tests on Benoit’s body have not been completed.

A federal indictment issued Monday charges Astin with improperly dispensing painkillers and other drugs to two different patients.

Prosecutors allege in the seven-count indictment that Astin dispensed drugs including Percocet, Xanax, Lorcet and Vicoprofen between April 2004 and September 2005. The recipients were identified in the indictment by the initials O.G. and M.J.; Benoit’s initials were not listed.

Astin pleaded not guilty and was being held in lieu of $125,000 bond. He will be under house arrest once he posts bond and must surrender his medical license.

Astin had written prescriptions for about 1 million doses of controlled substances over the past two years.