UPDATE at 9:35 p.m.: Police have identified the suspect in the woman's death as 28-year-old Robert L. West.

West is charged with murder. He will be arraigned Tuesday.

Southeast Alder Street has reopened, police said.

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Portland police are investigating the death of a woman found at a Southeast Portland apartment complex after a stand-off Monday morning.

Officers went to Alderwood Court Apartments at 17225 Southeast Alder Street to check on a resident. A woman's family said her husband assaulted her and they had not heard from her, police spokesman Sgt. Chris Burley said.

The family told police her husband assaulted her late Sunday night or early Monday morning. Police responded to the apartment before 3 a.m. Monday.

Portland Police Bureau's Special Emergency Reaction Team and Crisis Negotiation Team responded after the man would not cooperate with officers, Burley said.

Several apartments in the complex were evacuated. Other residents were told to shelter in place. Alder Elementary School, which is across the street, was closed because of the police activity.

Police reported the man was taken into custody at about 8:30 a.m. When officers entered the apartment, they found the woman dead.

Police haven't publicly identified the man or woman.

The woman's cause of death is not known.

Alder will be closed closed between Southeast 170th Drive and Southeast 174th Avenue for the next two to three hours as police investigate.

Jim Ryan contributed to this report.

— Samantha Matsumoto