UPDATE: Police arrest woman for murder charges, previously sought as 'potential witness'

Published: May. 9, 2017 at 4:59 PM AKDT
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5/11 UPDATE:

Although originally only mentioned as a "potential witness," police confirmed that Mary Rose Carter was arrested on murder charges just after 1:30 p.m. Wednesday.

In a community alert made by police on Thursday, they announced Carter's arrest as well as revealed further details about the killing of a man on Salem Drive on Tuesday.

According to Anchorage police, the victim, now identified as Gregg Niwa, 57, had apparently been drinking with Carter late on May 8.

That's when, authorities said, the two got into an argument. "During the course of that argument, Carter shot Niwa and then stabbed him several times in the torso," APD wrote in the news release.

They say she then ran away from the scene of the crime without contacting anyone or alerting authorities to Niwa's body. Police said that his body was discovered the following day by a roommate who was not home at the time of the killing.

Police eventually located Carter after issuing an alert asking people to inform them of her whereabouts. Police wrote that "after being questioned by police, she was arrested and charged with Murder I and II."

5/10 UPDATE:

Anchorage police say Mary Rose Carter, 32, has been located and will be interviewed by detectives after previously trying to make contact with her.

They say detectives believe she may have "information to provide regarding yesterday's death investigation."

In an email, APD spokesperson Renee Oistad said that "[police] have no reason to believe she is dangerous to the public."

Oistad said that police don't know exactly the extent of what Carter could contribute to the investigation or "exactly what she knows, if she knows anything at all regarding yesterday’s death, until we speak to her."

On Tuesday, APD called that death investigation a homicide.

Police described Carter's appearance as "a Native female, 5’7” tall, 214 pounds with black hair and brown eyes."

Authorities also released a mug shot of Carter. She had previously been arrested in 2014 for DUI, and in 2011 for assault, according to court records.

In the community message, police said that no arrests have been made and that the investigation is ongoing.


Anchorage Police are investigating a homicide at a home off Tudor Road Tuesday afternoon.

According to APD, police responded to the 1700 block of S Salem Drive to a report of an injured male just after 2:30 p.m. When officers arrived, a man was found dead at a residence. Police did not immediately say how the man died.

A neighbor tells Channel 2 there were initially close to a dozen officers in front of one of the homes on Salem Dr. The neighbor says a man lived in the home police were at for at least the last decade and that occasionally police had been seen there.

The Anchorage Police crime scene van arrived at the area around 4 p.m.

Police are hoping to speak with anyone who might have any information about what happened.

Call police at 786-8900 or to remain anonymous call Crime Stoppers at 561-STOP.