Fifty-four people, including students and teachers, were injured Friday after multiple explosions occurred inside a school mosque in Indonesia’s capital during Friday prayers, according to local media.

The explosions occurred in North Jakarta's State Senior High School 72 around 12:30 p.m. (0530GMT), the Jakarta Globe reported, citing police.

Most of the victims sustained minor, non-life-threatening injuries caused by glass fragments and the impact of the blast’s shockwaves.

A bomb squad carried out a thorough inspection of the area following the incident.

Authorities have yet to determine the cause of the incident. They found a long-barreled firearm and a pistol at the scene, according to the broadcaster tvOne.

The long-barreled firearm was covered with inscriptions, including the na

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