"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
When he saw his neighbor’s home on fire, Kaiden, 17, didn’t hesitate Edmonds hires firm to tackle downtown traffic snarl Family holds vigil for man who died in Island County Jail Front Porch: Fire districts open houses 2 arrested in fatal shooting of teen near Lynnwood Judge says molestation trial of former police sergeant can proceed Copper-wire theft knocks out power near Cathcart Police in Mountlake Terrace seek stabbing suspect
Our new comment system is not supported in IE 7. Please upgrade your browser here.