SAN JOSE (CBS SF) — A two-alarm fire raced through a San Jose apartment complex early Monday, killing a female resident and heavily damaging four units, displacing as many as 10 people, authorities said.

San Jose Fire Capt. Mitch Matlow said the fire was reported around 6:50 a.m. at the Fox Dale Village Apartments at 1310 Foxdale Loop near Capitol Expressway. Arriving firefighters quickly called for a second alarm because of the size of the building and reports that someone may be missing or trapped inside.

READ MORE: Santa Rosa Neighbors Blame City After Creek Overflows, Flooding Homes, Forcing Evacuations

“An apartment building of this size, just because of the size of the building, if you know you’ve got a working fire you bring in extra resources to help you deal with the size of the building,” Matlow said.

A fatality was confirmed as crews put out the blaze, which was declared under control around 7:45 a.m., Matlow said.

READ MORE: Los Gatos Mayor Issues Warning To Residents To Stop Harassment At Council Meetings

No information about the person who died was immediately available.

About 10 people were displaced from four apartment units affected by the fire. The cause of the fire was under investigation. Among those displayed was Mando Maldonado.

“That’s very sad, very tragic,” she said of her neighbor’s death. “It could be someone’s mom or aunt or something, You never know what could happen.”

MORE NEWS: Lowell High School Alumni File Lawsuit To Reinstate Merit-Based Admissions

Fire investigators were still trying to determine the cause of the blaze.