PLANO, TX -- A Dallas County (TX) medical examiner ruled today that David Jacobs, a personal trainer and convicted steroids dealer, committed suicide Thursday by shooting himself twice.

Plano, TX, police found Jacobs and professional fitness competitor Amanda Jo Earhart-Savell dead of gunshot wounds Thursday in Jacobs’ Plano home. A Glock 40 semi-automatic handgun was found beside Jacobs’ body, but no other firearms were found in the home, according to Plano police. Earhart-Savell, Jacobs’ girlfriend, had multiple gunshot wounds, but authorities did not confirm the time or manner in which she died. The investigation continues.

Jacobs, described as the ringleader of one of the largest steroids networks in the United States, was sentenced to three years’ probation and fined $25,000 in May after pleading guilty last year in federal court in Dallas to conspiring to possess with intent to distribute anabolic steroids.

Jacobs recently met with National Football League (NFL) security officials and gave them names of players he said bought steroids from him. The officials were said to be examining the evidence provided by Jacobs to determine whether to seek discipline against those players.

“We offer our sympathy to the families of David Jacobs and Amanda Jo Earhart-Savell,” the NFL said in a statement. “As we have previously confirmed, our security representatives interviewed David Jacobs on two occasions. We are reviewing the information to determine if there is documented evidence establishing any violations of our program and will follow up on any other information that is provided.”

On the Web site for his now-defunct nutrition store in Plano, Jacobs described himself as a trainer who “offers guidance to many top athletes across the United States,” including “Dallas Cowboys and Atlanta Falcons football players.” One of those players, Jacobs had claimed, is offensive lineman Matt Lehr, who played for the Cowboys, Falcons and Tampa Bay Buccaneers and is now a member of the New Orleans Saints. Jacobs also claimed he sold steroids to bodybuilders and police officers.

Jacobs and Earhart-Savell were said to have had an on-again, off-again relationship for about a year. Earhart-Savell played tennis at Texas Tech University and received All-Big 12 Conference honors before graduating in 2000. She soon got involved in bodybuilding and went on to become an IFBB Professional Figure competitor. She placed in the top five in the 2007 Figure Olympia contest. She also appeared in many fitness magazines, including Muscle & Fitness, Flex, and Oxygen.