At least four people are dead and at least 12 are in critical condition after a crash in Seattle, according to the city's fire chief.
A Ride the Ducks tour vehicle and another tour bus collided Thursday.
"We spoke to two different people, one who was driving along the bridge earlier today. He said he was driving north when he saw the Ride the Ducks vehicle in front of him. He said the Ducks vehicle swerved," a KOMO reporter said.
"The Duck was in the far right lane going northbound, and it seemed to start to weave towards the middle lane. ... He overcorrected to get away from the barrier and shot across all five lanes, or four lanes," an eyewitness told KIRO.
The Seattle Fire Department reports approximately 50 people have been evaluated for injuries.