A 77-year-old man living at a senior housing complex in Wyoming, the United States, on Wednesday shot three people before turning the gun on himself, killing one victim and himself, police said.

The gunman, identified as Larry Rosenberg, shot one victim inside the Heritage Court Apartment and other two outside the building, said Dan Long, spokesman for the Cheyenne Police Department.

He turned the gun on himself as police officers approached, the Cheyenne Police Department posted on Facebook. He has been declared dead.

No motive was disclosed for the shootings. Some people who knew Rosenberg said he had grown distant recently.

"He started getting more and more distant, complaining about the facility and about people and just kind of pulling away, isolating himself more and more," said Margaret Rosso, whose 80-year-old mother lives at the same complex.

Multiple shootings are rare in Cheyenne, Wyoming's capital city, with a population of just over 60,000. According to the local police department annual report, the city police handled six homicide cases last year.

Source : XINHUA