Air raid sirens have wailed across Jerusalem, signaling that Hamas terrorists in Gaza militants have fired a rocket at the city.

Two plumes of smoke could be seen over the skies of downtown Jerusalem in what Israeli TV stations said was an interception of incoming rockets by Israel’s “Iron Dome” rocket-defense system.

Two booms could be heard in the distance. It was not clear whether the explosions were incoming rockets or the defense system.

No injuries or damage were immediately reported.

Jerusalem Police released a statement saying “No injuries in rocket attack to the capital. None of the rockets landed in residential areas of the capital”.

It was the second rocket attack on Jerusalem since the launch of Operation Protective Edge.

(AP)