POLICE are investigating a suspicious fire that caused $2 million to a high school in Galston overnight.

Emergency services were called to the school in Sydney’s north at about 1am after neighbours saw a building alight on the school grounds.

About 40 fire fighters arrived shortly after and found the multistorey library block “well alight” and the roof collapsed.

media_camera Left in ruins... Glaston High School’s library was destroyed overnight. Picture: Tracey Findlay

“The fire has caused extensive damage to the building and the roof has collapsed,” an Rural Fire Service spokesman said.

“Crews are going to remain on scene in the morning and engineers are coming in to assist the structural integrity of the building.”

Parents have been advised not to send their children to the school today.

Temporary care has also been set up for students at the nearby Galston Public school.

Police have established a crime scene and are treating the blaze as suspicious. Forensics and detectives have arrived to assess the library.

“Later today crime scene and fire investigators will examine the library when it is safe to enter the building,” a police spokesman said.

media_camera Gutted ... what was left of the destroyed library building this morning. Picture: Tracey Findlay

“It is estimated that the repair bill for the building and to replace its contents will be in excess of $2 million.

“Police have urged anyone with information about suspicious or unusual activity near the school overnight to come forward.”

media_camera RFS crews scrambled to contain the blaze overnight. Picture: @M_Taverniti/Twitter

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