Report: Grad rocket strike injures 4 Egyptian officers in Sinai

A Grad rocket strike seriously injured four Egyptian officers in Sinai's northern city of el-Arish Tuesday night, Palestinian news agency Ma'an reported.
The projectile, which hit a military prosecution building, was fired by Salafist affiliates, according to locals.
Ma'an cited witnesses as saying they heard a large explosion before flames and smoke began rising from the building.