DENVER - The man accused of killing his wife while she was on the phone with 911 was advised Monday that prosecutors have charged him with one count of first degree murder.
Richard Kirk is being held without bond.
According to search warrants, Richard's wife, Kristine Kirk, told a 911 operator last Monday night that her husband had "taken some marijuana and possibly some prescription medication for back pain" before he started "hallucinating" and scaring her and the couple's three young children.
On the 911 recording, 47-year-old Richard Kirk can be heard in the background talking about taking marijuana "candy" that he had purchased from a recreational marijuana shop, the documents say.
Authorities say Kirk shot his wife in the head about 12 minutes into her call with 911, although 7NEWS has determined that it took Denver police at least 16 minutes to respond to the home at 2112 S. St. Paul St., near the University of Denver.
Officers entered the home to find a black semi-automatic handgun on the floor of the front room and a cartridge on the floor in a hallway. Nearby police found Kristine Kirk lying on the floor. She was pronounced dead at the scene just before 10 p.m., police said.
The medical examiner said the woman died from a gunshot wounded to the head. The killing was ruled a homicide.
Police obtained a warrant to search the home and to obtain a blood sample from Richard Kirk that will be analyzed to determine whether he had ingested marijuana or other drugs and medications, the document said.
While searching the home, a detective found a receipt in the basement for $32.70 worth of marijuana products purchased at 6:40 p.m. that evening from Nutritional Elements, a marijuana shop, at 2777 S. Colorado Blvd.
The receipt identified the purchased items as "Karma Kandy Orange Ginger," an edible marijuana candy, and "Pre 98 Bubba Kush Pre-Roll," a pre-rolled marijuana cigarette, the document said.