Foss High School was briefly evacuated today after three students tried to flush firecrackers down a urinal in the boy's bathroom.
Someone pulled a fire alarm about noon - during the school's second lunch period - and a school resource officer went to investigate. Following the smell of smoke, he found the remnants of a urinal.
“It looks like some kind of fireworks in the toilet,” said Tacoma police spokesman Mark Fulghum.
The bomb squad responded and officers walked the campus with a K-9 unit before allowing students back into classrooms about 1 p.m.
Three students have been detained for questioning, said Tacoma Public Schools spokeswoman Stacey Flores.