A man has been indicted on federal charges of providing a firearm used in the shooting of two Tulsa (OK) police officers earlier this year.

According to Fox News, the man—identified by authorities as Jakob Garland—was charged with possession of a firearm in furtherance of drug trafficking and felon in possession of firearm.

Garland is accused of giving David Ware a gun in exchange for heroin on June 19, said U.S. Attorney Trent Shores in a press conference.

Ware is accused of shooting and killing Tulsa police Sergeant Craig Johnson and wounding Officer Aurash Zarkeshan during a traffic stop in late June.