Authorities in Denver are looking for a student after he opened fire at two school staffers early Wednesday morning while being searched as usual.
Police said that the victims were shot, one critically, as they patted the juvenile suspect down in the office area of East High School.
The routine search was the result of the student's “previous behavior” investigators said without elaborating.
Following the shooting, the school was placed on lockdown before releasing the students to parents.
The suspect, who is known to authorities, is still at large.
The school superintendent said that two armed officers will now be deployed to the high school to enhance security for the remainder of the school year.