A man in his 70s walked into the Bellevue, Wash., police station Friday and told officers he had killed his wife two days earlier, local media reported."He came and turned himself in," police spokeswoman Carla Iafrate said, according to a Seattle Times report late Friday. "Detectives confirmed that and so they begun investigating into the case Saturday afternoon."Police said the man turned himself in around 3:00p.m. and police later found a woman's body in a Bellevue home, NBC station KING said.The husband and wife reportedly were both born in 1940, the Times said. Their names were not immediately released.Neighbors told KING that the couple had a dispute two years earlier but it was resolved. However, they said, the wife asked neighbors to call 911 if they saw her husband come within 100 feet of the home.Bellevue, a city of about 122,000, is an eastside Seattle suburb.