Student Arrested After Allegedly Throwing Molotov Cocktail Into Monrovia High School: Police

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Firefighters battled a blaze that erupted overnight on Monrovia High School on Nov. 30, 2015. (Credit: RMG News)

A 17-year-old student was expected to be charged with arson after allegedly tossing a Molotov cocktail into a Monrovia High School building on Monday, police said.

Firefighters responded to the high school, located at 845 W. Colorado Blvd., after a report of a structure fire shortly before 12:30 a.m., according to Chris Fabrizio, a division chief with the Monrovia Fire Department.

When units arrived on scene, they heard a fire alarm, but did not see flames or smoke. Fire crews discovered one classroom on the first floor fully engulfed upon entering the building, Fabrizio said.

The blaze was confined to the school’s administration building, according to Sgt. Wilken of the Monrovia Police Department.

It was unclear exactly how much damage the fire caused before it was extinguished. No injuries were reported.

A juvenile who was found hiding in the “general vicinity” of the school was taken into custody after surrendering to police, according to Wilken.

Authorities believed he tossed a Molotov cocktail — which he possibly made himself — into the administrative office, Monrovia police Sgt. Michael Lee said.

He was transported to Eastlake Juvenile Facility, and was expected to be charged with arson, according to Lee.

The student’s identity has not been released because he is a minor.

A motive remained unknown.

The school’s principal told an officer at the scene that classes would be held on Monday, Wilken said.

No further information was released about the incident, which remained under investigation.

KTLA’s Geoff Peters and Jennifer Thang contributed to this story.