UPDATED 5:30 P.M. — Police have determined that the grenade found Monday afternoon in the parking lot of the Phoenix Academy school building on Industry Drive was real.

Police said the grenade, which was found by a teacher around 12:30 p.m., had been modified. It appeares that someone threw the grenade toward the school building from the side of Champions Cheerleading facility next door.

State Police Detective Ben Wolcott said late Monday afternoon that the grenade was indeed real, but lacked the mechanism to make it explode.