Police investigating a fire that killed a housewife and two others in the city of Nagano suspect the woman was a victim of stalking, with the stalker possibly being one of the deceased.

The Nagano Prefectural Police said the 41-year-old Filipino woman, Flora Cabornay, died in the hospital Tuesday after Sunday's fire.

The police believe her husband, Shoichi Kitamura, 57, is one of the two men found dead at the house. The identities of the men have not yet been confirmed.

The police are investigating information that Flora had complained about stalking by a Filipino man living in Yamanashi Prefecture and that someone forced him or herself into the house shortly before the fire, according to investigative sources.

She made an emergency call Sunday morning suggesting she had become involved in some kind of trouble, the police said.