Family and friends react to the news of a loved one who died in a house fire at 2201 Heather Lane in Newport Beach on Wednesday. The woman, second from right, said she is the sister of the homeowner. (KEVIN CHANG, Daily Pilot / November 14, 2012)

Police on Thursday identified a woman killed in a house fire near the Back Bay as Mary Louise Phillips.

Firefighters discovered the 90-year-old woman's body in her Heather Lane home when responding to a fire reported about 10:40 a.m. Wednesday, authorities said.

Newport Beach and Costa Mesa firefighters put out the blaze by 11:18 a.m., according to Newport Beach fire Battalion Chief Chip Duncan.

The fire was ruled an accident, and was most likely electrical in nature, according to Newport Beach police spokeswoman Kathy Lowe.

— Lauren Williams

Twitter: @lawilliams30