Ahmad Al Aliwi Alissa was already charged with 10 counts of first-degree murder and one count of attempted murder stemming from the March 22 shooting rampage at the King Soopers grocery store in Boulder, about 28 miles northwest of Denver.
Ten people were killed in the massacre, including a responding Boulder police officer, and authorities have not disclosed a possible motive for the shootings. Alissa is being held without bond at an undisclosed lockup. He was transferred from the Boulder County jail “due to safety concerns and threats,” the sheriff’s office has said.