The Gallatin County Sheriff's Office announced Monday night that the two people identified as persons of interest in a Billings homicide last week died in an "apparent" homicide-suicide after they were pursued by law enforcement into a wooded area north of West Yellowstone.
In the same announcement, the sheriff's office identified both individuals.
Henry Porter, 22, died of a single gunshot wound to the head. Erika Miller, 28, also died of a single gunshot wound to the head. Both were from Billings.
A sheriff's office press release identifying Porter and Miller did not specify who fired the fatal shots.
The Yellowstone County Coroner's Office last week identified the homicide victim as 64-year-old Roxann Renee Watson. She was found dead by police last Thursday inside a home on the 1000 block of Avenue B during an early afternoon welfare check.
Watson died of strangulation and multiple blunt force trauma injuries, Deputy Yellowstone County Coroner Rich Hoffman said last week. At the time there was no indication of when Watson had been killed, according to Hoffman.
Law enforcement had identified Porter and Miller as persons of interest after Watson's body was found and a suspect vehicle was eventually located and then pursued in the West Yellowstone area before Porter and Miller got out of the vehicle and ran on foot into the Duck Creek area near the intersection of Highway 287 and Highway 191.
Seven different law enforcement agencies formed a perimeter and a shelter in place order was issued for nearby residents.
"Law enforcement heard two gunshots shortly after the suspects had entered the wooded area," the Gallatin County Sheriff's Office said in a press release last week.