KING OF PRUSSIA, Pa (CBS) -- A woman was injured after a partial roof collapse at the King of Prussia Mall on Sunday.

Shortly after 3 p.m., Upper Merion Police and medics were called to the scene of a partial roof collapse near the Piazza di Giorgio, outside of the mall.

Upon arrival, they found a woman had suffered a minor head injury after a large piece of concrete ceiling broke loose, fell to the ground next to her and part of it or some debris struck her on the head.

The victim was taken to Paoli Hospital for evaulation and was expected to be okay.

The cause of the collapse was under investigation by the Upper Merion Township Codes Enforcement and Police Department.