Four Palestinians killed in Gaza explosion

Four Palestinians have died and a fifth is in a serious condition after their car exploded in the Gaza Strip this morning.

The dead men were discovered in the burnt-out vehicle about 600 yards from the Sufa crossing between Israel and the Gaza Strip.

Kalashnikov rifles were also apparently found near the vehicle.

Palestinian sources said Israeli helicopters were seen in the area at the time of the explosion, suggesting the men may have been assassinated by the Israeli army.