"We contained and evacuated the area," Snohomish County Sheriff's Office spokeswoman Shari Ireton said.
A Washington State Patrol bomb squad, which includes law officers from several local police agencies, removed the bottle and took it to the Boom City parking lot behind the casino.
It was unclear what was in the bottle, Ireton said.
The bottle and its contents were destroyed with a chemical explosive, Ireton said.
More Local News Headlines
Last stop for the circus elephants in Everett Activists pitch plan to divide Everett into districts Complaints say that commerce officials helped PUD score a grant Faith Calendar You can register to vote at Snohomish High on Saturday Comment on the Everett Smelter cleanup Have coffee with a Lynnwood cop Edmonds woman scammed on dating site recovers $22,000
Our new comment system is not supported in IE 7. Please upgrade your browser here.