At least five people were injured, some critically, in a stabbing at a Washington state high school on Thursday, according to authorities and local reports.

Emergency responders rushed to Foss High School in Tacoma around 1:40 p.m. after reports of a possible stabbing, KOMO reported.

Five victims were taken to the hospital, four of whom are in critical condition, Tacoma fire department officials confirmed to Fox13 Seattle.

One suspect is in custody, the local Fox affiliate station reported. It’s unclear if the victims or the individual arrested are students.

The Tacoma Fire Department and Tacoma Police Department did not immediately respond to The Post’s request for comment.

This is a developing story. Please check back for updates.