Phoenix Police detectives are investigating the death of Mark Daniel Brendmoen, in Phoenix in April.
According to the Phoenix Police Department, on April 13, 2025, at around 4:21 p.m., officers responded to the area of 19th Avenue and Bethany Home Road to an aggravated assault. When officers arrived on the scene, they located the 56-year-old Brendmoen, in critical condition and bleeding from his head. The Phoenix Fire Department arrived on the scene and transported him to a nearby hospital, where he underwent multiple surgeries to treat a severe brain bleed.
On July 20, 2025, Brendmoen succumbed to his injuries from the assault and died. On July 21, 2025, an autopsy revealed Mark suffered blunt force injuries with a corresponding brain bleed. However, the results of the autopsy were pended. On October 9, 2025, the death was ruled a homicide.
Homicide detectives are asking anyone with information to call SILENT WITNESS at 480(WITNESS) or 480(TESTIGO).