Buck was found guilty of two counts of distribution of methamphetamine resulting in death, four counts of distribution of methamphetamine, one count of maintaining a drug-involved area and two counts of the lure to travel in the state trade for prostitution.
Gemmel Moore, 26, died of an overdose in July 2017 and Timothy Dean, 55, died in January 2019.
“It was an enormous honor to be able to assert the rights of the victims in the case,” said U.S. Assistant Attorney Chelsea Norell.
CNN reached out to Bucks’ attorney, Ludlow Creary II, for comment, but did not receive an immediate response.
Prosecutors said in a press release Tuesday that Buck typically targeted people who were poor, homeless or struggling with substance abuse.
“He exploited the wealth and balance of power between them by offering his victims money to use drugs and letting Buck inject them with drugs,” prosecutors said in the statement.
Buck bought a plane ticket to Moore that had moved to Texas so Moore could travel to Los Angeles in July 2017 to party and play in Bucks apartment, according to prosecutors
“But we got victory today,” she said outside the courthouse.
Timothy Dean’s sister Joyce Jackson thanked her followers.
“Finally, Ed Buck will never hurt anyone else, and I thank God for that,” Jackson said.
Norell thanked the Los Angeles County Sheriff’s Department, the FBI and the Drug Enforcement Administration.
“They put together a huge case and we would not have had the scope and quality of evidence without our law enforcement partners who are the unsung heroes here,” Norell said.
Buck, 66, faces a mandatory minimum sentence of 20 years in federal prison with a maximum sentence of life in federal prison.
He also faces state charges filed by the Los Angeles County District Attorney’s Office.
CNN’s Sarah Moon contributed to this report.