_{Elite school 'firebug' bust}

A 16-year-old Stuyvesant HS junior is suspected of setting nine small fires over the past week at the top-ranked school.

Mohammed Hassan of The Bronx was charged with felony reckless endangerment and misdemeanor arson. The top charge carries a maximum sentence of seven years.

There is video evidence in two of the fires, the only ones the tall, seemingly shy kid was charged with, cops said.

Both were ignited in trash cans in boys' rooms on different floors within minutes of each other on Tuesday. Hassan is allegedly seen on surveillance tape going in and out of the bathrooms before the fires were discovered.

Cops suspect he is responsible for a total of nine small blazes, including one set Friday the 13th in a boy's room.

Hassan remains free on $2,500 bail. His lawyer, Kevin Faga, told The Post that the videos catch more than one boy going in and out of the restroom, and that Hassan did not set the fires.