A woman shot to death on New Year’s Day, allegedly by her husband, was identified by the medical examiner on Saturday as Mary Katherine Fa’anunu, 34.

At about 12:34 a.m. Friday, dispatchers got a 911 a call from Hauati Faanunu, 41, a resident at 8202 Melrose Lane in unincorporated El Cajon, Sheriff’s Homicide Lt. Kenn Nelson said.

“The caller stated he had just shot his wife,” Nelson said. Deputies from the Sheriff’s Lakeside Substation “discovered a dead adult female with trauma to her upper body,” Nelson said. “No one else was home.”

A short time later, Faanunu turned himself in at the El Cajon Police Department, Nelson said. Sheriff’s deputies arrested him at the police station. The medical examiner also completed an autopsy on Mary Fa’ anunu on Saturday.

“The cause of death was a gunshot wound to the head and the manner of death has been ruled a homicide,” the medical examiner said. Anyone with further information about the incident is urged to call the Homicide Detail at (858) 974-2321, after hours at (858) 565-5200, or Crime Stoppers at (888) 580-8477.

According to a GoFundMe page, Fa’ annu leaves behind six children. They have raised almost $4,000 to support her family.

— City News Service contributed to this article.