Union City, Calif. — Authorities are trying to determine what was inside brownies that sickened five San Francisco Bay area high school students.

Officials say the students at James Logan High School in Union City thought they were eating marijuana-laced brownies last week, but began to feel more ill than high.

District spokesman Rick La Plante says two of the students, a senior and a sophomore, suffered convulsions and had to be hospitalized. They have since recovered.

Authorities are awaiting toxicology reports to determine what the brownies contained.

They also are trying to determine the source. La Plante says it’s not clear whether the students got the brownies on- or off-campus.

All five students could face disciplinary action.

via Fox News