Two Graham-Kapowsin High School students were shot just off campus Tuesday afternoon, according to the Pierce County Sheriff's Department.
Troyer said they believe the two victims were students of the high school, but the shooters were not.
The agency announced the incident on Twitter shortly before 3 p.m., saying one student was found in a parking lot by the football field and another was found in a locker room.
"Both kids are at Tacoma General (Hospital) in surgery and are both expected to survive", said Pierce County Sheriff PIO Ed Troyer.
Pierce County Sheriff's Department released a photo of the two suspects, as well as photos and video of the vehicle they fled the scene in, a green Chevy Impala.
The conditions of the victims, both males, were not immediately known.
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Troyer said that officers are investigating a motive for the shooting, and that it may have been gang-related.
In a prepared statement, district officials offered their " thoughts and prayers" for the students involved in the shooting and their families, and gave reassurance that students on the campus "are safe". "That's something we have teams of people working now", Troyer said.
Three nearby schools - Graham-Kapowsin High School, Frontier Middle School and Nelson Elementary - were placed on lockdown as deputies conducted multiple security sweeps. The Bethel School District confirmed in a tweet that the victims are students at the school.
The high school is located at 22100 108th Ave E.in Graham.
Students were beginning to be released from school about 4:30 p.m., starting with Frontier Middle School, according to the Bethel School District. It's unclear whether the shooter or shooters were students at the school.