Christopher Strahan

Updated 6:10 p.m.

A former Oregon State University student was arrested Tuesday after authorities say he threatened a shooting at the Corvallis campus on social media.

Christopher A. Strahan, 22, was found outside a home in Corvallis by Oregon State Police around 2:30 p.m. and arrested after investigators linked him to a Twitter account with a series of tweets threatening violence, state police said. He is accused of first-degree disorderly conduct.

Strahan was enrolled at the university from fall 2014 to winter 2017, but was no longer a student after last March, said Steve Clark, a university spokesman. His major was food science technology with a minor in chemistry.

Clark said he didn't know why Strahan was no longer enrolled.

School officials were informed of the tweets late Tuesday morning, Clark said.

"Oregon State University campus going to get shot up and who will be to blame," one tweet said.

"There's no fun in shooting up a random school it has to be people I know or ID DIE," another tweet said.

The Twitter account linked to the tweets lists a Corvallis home address that doesn't appear to be involved, according to Clark.

Campus remained open as Oregon State Police and other authorities searched for the source of the tweets, Clark said. He said he didn't know of anyone found on campus carrying a weapon.

The Oregon State threats join about half a dozen other threats of violence at Oregon schools since the Feb. 14 shooting at a Parkland, Florida high school that killed 17 people.

A 17-year-old boy from Gervais was arrested on Feb. 23 on suspicion of making threats on social media against several schools in the Woodburn and Gervais school districts, according to Woodburn police. The boy was arrested at home and Gervais High School was temporarily placed on lockdown because of the posting, authorities said.

Bend police on Feb. 22 arrested a 16-year-old boy accused of threatening on social media to shoot students at Bend Senior High School, police said. The boy, a student at Marshall High School in Bend, is accused of first-degree disorderly conduct. Guns were found in the home, but they weren't accessible to the boy, police said.

The same day, a 14-year-old girl was arrested after Corvallis police said she was identified as the source of a Snapchat post warning of an unspecified potential violent act at Linus Pauling Middle School in Corvallis. The girl, who is a student at the school, is accused of first-degree disorderly conduct and initiating a false report.

A male student at North Medford High School was arrested on Feb. 14 on suspicion of warning of a campus shooing the next week in writings on a bathroom stall, Medford police said. He is accused of first-degree disorderly conduct.

The Deschutes County Sheriff's Office said they cited two students at High Desert Middle School in Bend on Feb. 15, one for pulling a fire alarm and another who implied having a gun and threatened a shooting. Both are accused of first-degree disorderly conduct. No firearms were found at the school, the sheriff's office said.

-- Everton Bailey Jr.

ebailey@oregonian.com

503-221-8343; @EvertonBailey