Bryan Kohberger allegedly searched for pictures of female students on his cellphone, some of whom were close friends with three of the University of Idaho students who were killed.

Kohberger is charged with first-degree murder in the deaths of University of Idaho students Xana Kernodle, 20, Kaylee Goncalves, 21, Madison Mogen, 21, and Ethan Chapin, 20. The former Washington State University student was also charged with one felony count of burglary.

“Dateline” on NBC obtained Kohberger’s cellphone browsing history, which shows he allegedly searched for dozens of pictures of female students at Washington State University and the University of Idaho.

Many of the pictures Kohberger searched for showed females in bathing suits. According to the report, some of the females’ accounts were either followers or close friends with Kernodle, Mogen and Goncalves.

• 4 a.m.: Suspect arrives at house
• Between 4 and 4:17: Time of murders
• 4:19: Roommate calls 3 victims, no one answers
• 4:22 to 4:24: Surviving roommates text each other from inside house
• 4:27: Roommate calls victims again; no one answers
• 4:32: Roommate texts Goncalves ‘Pls answer’
• 10:23: Surviving roommate texts victims; no one answers
• 11:39: Roommate calls her father
• 12 p.m.: 911 call placed from roommate’s phone

Madison Mogen, top left, smiles on the shoulders of her best friend, Kaylee Goncalves, as they pose with Ethan Chapin, Xana Kernodle and two other housemates in Goncalves’ final Instagram post, shared the day before the four students were stabbed to death. (@kayleegoncalves/Instagram)

Kohberger’s trial is scheduled to begin on Aug. 11.