Seattle Police were called to a middle school graduation on Capitol Hill last night when a melee broke out after off-duty officers tried to arrest a teenage girl.

Just before 6pm last night, off-duty officers working Meany Middle School graduation ceremony spotted a 16-year-old girl who had previously been trespassed from the building.

Police say the officers attempted to arrest the girl when another 14-year-old girl jumped in and attacked one of the officers. Police called for backup and arrested both teens.

As police were transporting the two teens to the juvenile detention center, a third teen jumped onto the back of a patrol car and fled. Because a large crowd had gathered, police were not able to determine the identity of the girl who attempted to hitch a ride.

The 16-year-old girl was released to her parents. The 14-year-old was booked into the Youth Service Center for investigation of assault.