SEATTLE -- One man is in the hospital and another is in jail after a Wednesday night slashing inside a University District Starbucks.

The incident happened at about 8:30 p.m. at a Starbucks in the 4100 block of University Way NE, which is just blocks away from the University of Washington campus.

Witnesses told police a man walked into the coffee shop Wednesday night and began "causing a disturbance." The man was asked to leave, and as he walked out he slashed a patron on the back of the neck, according to police.

After witnessing the assault, several customers followed the man out of the Starbucks while they called 911.

The suspect walked to nearby Flowers Bar, where police found him a short time later. Witnesses identified the suspect and police arrested him. The suspect, who has not been identified, was booked into King County Jail.

Tony James, who tends bar at Flowers, called the suspect a "regular" who comes into the bar nearly every day. James said nothing seemed out of the ordinary when the man came in to the bar Wednesday night.

"He just walked in like he always does, got a beer and sat down," he said.

The victim was taken to Harborview Medical Center for treatment. His current condition is not known, but police described the cut as "serious."