Nine Mountain View Middle School students were hospitalized Tuesday after taking a combination of prescription pills.

Eight of the nine students were released from the hospital by the end of the day, said Bremerton School District spokeswoman Patty Glaser. Two students suspected of distributing the drugs were expelled, while the other seven were suspended.

Bremerton police are investigating the incident and arrests for the two expelled students are possible, Bremerton Police Det. Randy Plumb said.

A student came to the main office of the school reporting illness around 9 a.m. and was taken home by his father after vomiting. That student told his father he and his friend took pills and the father contacted the school district. The school district then called paramedics.

At least two different kinds of medication are suspected to have been taken, including an anti-depressant and the pain medication OxyContin.

Principal Michaeleen Gelhaus sent a letter home with students and automated phone calls were made to parents.