Explosions have been heard in Jerusalem after air raid sirens sounded. The sirens came Monday, shortly after the Hamas militant group in Gaza had set a deadline for Israel to remove its security forces from the Al-Aqsa Mosque compound. The sounds of outgoing rocket fire were heard in Gaza shortly before the sirens went off. It was not clear if the explosions were rockets landing or rocket-defense systems trying to intercept them. There were no immediate reports of injuries or damage.