At least two people were injured when a hand-grenade exploded at Boulaq Al-Dakrour police station in Giza on Monday. Unknown assailants, reportedly three persons on a motorcycle according to Ahram Arabic news website, threw the grenade at the station from above the nearby Tharwat Bridge. As tensions are on the rise in Egypt regarding the security situations, several reports emerged warning of "suspicious material" found at various sites in Cairo, although without any major explosions to date. Police stations have been targets of attack since security forces dispersed the two main protest camps demanding the reinstatement of ousted president Mohamed Morsi on 14 August, leaving hundreds killed. http://english.ahram.org.eg/News/80584.aspx