The commotion started about 6 p.m. at the court at the corner of U.S. 2 and 179th Avenue SE.
The man, 24, was before a judge in some kind of criminal-case hearing, Snohomish County sheriff's spokeswoman Shari Ireton said.
The man allegedly assaulted a security officer and then ran into the Evergreen State Fairgrounds.
Sheriff's deputies, Monroe police and Washington State Patrol troopers converged on scene to find him.
The man was arrested about 6:30 p.m. and taken back to the court, Ireton said. He was expected to be taken to Snohomish County Jail.
No serious injuries were reported. Additional details weren't immediately available.
More Local News Headlines
Three weeks out, only four 911 texts have been valid County deputy director named president of state engineers association Accident victim has endured, thanks to his family, police officer Crews try to save man pulled from Stillaguamish River 4:03 p.m. State’s oldest full-time worker on the job at EdCC Lord Hill levee repairs to start July 29 Less than a week before election, only 9.1 percent of ballots returned Red Cross on the lookout for heroes
Our new comment system is not supported in IE 7. Please upgrade your browser here.