A man has shot and killed six people at a party in Seattle in the western US state of Washington before taking his own life, police say.
Police believe the gunman knew the home but did not live in the area
Those killed were all teenagers or in their 20s, a police spokeswoman said. Another two people were taken to hospital with gunshot wounds.
The incident took place at about 0700 (1500 GMT) in a residential area.
"It's one of the largest crime scenes the city has ever had," Seattle police chief Gil Kerlikowske said.
An officer in the neighbourhood arrived at the scene after hearing shots fired. He found one person staggering out of the house with a bullet wound.
He confronted another man with a shotgun, who turned it on himself after being told several times to put it down, Mr Kerlikowske said.
Police Sgt Deanna Nollette told the Reuters news agency that there were 15 other people at the house who witnessed the shooting.
The suspected shooter appeared to have left the party, then returned and started firing. His identity has not been confirmed.