Seattle explosion injures nine firefighters

A major explosion in north Seattle early on Wednesday wounded nine firefighters and damaged multiple businesses, officials said.
Eight firefighters and one battalion chief were taken to a local hospital with minor injuries, according to department spokeswoman Corey Orvold.
The explosion occurred at 1:43 a.m. PST, and damaged multiple businesses north of downtown Seattle and the Space Needle, Orvold said.
A restaurant and convenience store appeared to be leveled and a coffee shop also was heavily damaged, Orvold said. Businesses across the street also were hit, she said.
The cause of the blast was not immediately known. Fire investigators were working to determine the cause, Orvold said.
Dozens of firefighters, command staff and medics responded to the scene, the department said on Twitter.