LAPD detectives investigating 23-year-old man's fatal stabbing in Arleta as a "justifiable homicide"

Los Angeles Police Department detectives are investigating a 23-year-old man's death in Arleta on Saturday morning as a "justifiable homicide."

Officers were called to the 9220 block of Nagle Avenue at around 3:35 a.m. for an "ambulance cutting," according to a news release shared on social media. 

"The 911 caller stated that she stabbed her ex-boyfriend with a knife after he broke into her home through a window and physically assaulted her," the release said. 

The man, identified as 23-year-old Ruben Valle, was pronounced dead at the scene by Los Angeles Fire Department paramedics, police said.

"Detectives are investigating this as a justifiable homicide and believe this to be an isolated incident," police said. The announcement came after the woman had previously been detained.

The woman, who hasn't been identified, was taken to a nearby hospital with evidence of multiple blunt force injuries, according to the release. 

As the investigation continues, anyone with more information is urged to contact the LAPD's Robbery-Homicide Division, Valley Section Detectives Lopez or Simonyan at 818-374-9550.