SIOUX CITY, Iowa (AP) — A man accused of trying to kill someone he thought would provide drug trafficking information to police has pleaded guilty. The Sioux City Journal reports that 23-year-old Isaac McDonald pleaded guilty Tuesday in U.S. District Court in Sioux City to several crimes, including tampering with a witness by attempting to kill a person.

Prosecutors say McDonald conspired with three other people to kill John Mercure. Court documents say McDonald used a handgun to shoot Mercure as Mercure was driving down a Sioux City street last Aug. 1st. Mercure soon crashed into a tree, but survived.