The college said late last week, a student discovered a threat written on a toilet paper dispenser in a men's restroom that said: "I will kill everyone at SCCC on May 31."

College spokeswoman Laura Mansfield said the person who wrote the threat hasn't been caught.

Mansfield said Seattle police officers will patrol the campus Thursday, and college staff will hand out fliers to students as they arrive on campus informing them of the threat.

Mansfield said the college warned the campus community about the threat in an e-mail on Friday and again Wednesday. The campus president also posted a message on the college's Web site.

"It just didn't seem like the kind of threat you take seriously, so it didn't bother me," said Michael Mortensen, instructor.

"I think it's nonsense," said Diane Magnan, custodial supervisor. "That the threat itself is nonsense, but we can't take chances."

The college's Broadway Edison and Science and Mathematics buildings will be on lockdown.

The college said if any students are too afraid to come to class Thursday, other arrangements can be made for them.

In April, a University of Washington employee was shot and killed in her campus office by her ex-boyfriend in April.