As for the question of whether the killing was premeditated, Gill reminded journalists that a charge of aggravated murder can be filed in Utah whether there is intent, or whether the defendant acted in such a way that the intent was to kill the victim, but it is not necessarily to prove it was a premeditated action.
Gill also stressed that the case is still ongoing and active.
"It has not come to a conclusion," he said.
Suspect assaulted Utah student Mackenzie Lueck, then burned her body, charges say
Lueck began texting Ajayi on the evening of June 16, before she flew into Salt Lake City after attending a family member’s funeral in California, Salt Lake police say. She also exchanged texts with Ajayi on the morning of June 17 after landing, the charges state. Her last text to him was at 2:58 a.m., one minute before her Lyft dropped her off at Hatch Park in North Salt Lake, according to investigators.
Police found a human bone, charred muscular tissue, part of a scalp with hair, a cellphone and other charred personal items in the excavation area in Ajayi's yard, according to charging documents. More charred items were found in an alley next to Ajayi's home.
As police continued to analyze Ajayi's cellphone data, they learned he was in Logan Canyon on June 25 between 2:30 p.m. and 4:30 p.m., charging documents state. Investigators found Lueck's remains on July 3.