Gaza authorities said an Israeli airstrike killed five Palestinian journalists outside a hospital on Thursday but the Israeli army said it had attacked a vehicle carrying Islamic Jihad militants.Medics said the five were among at least 21 people killed in Israeli air assaults across the Palestinian enclave before dawn as Hamas and Israel traded blame over delays in reaching a ceasefire deal after more than 14 months of fighting.

STORY: An Israeli airstrike killed five Palestinian journalists outside a central Gaza hospital on Thursday, according to Gazan authorities.The Israeli army, however, said the strike had targeted a vehicle carrying "terrorists".

TV said journalists were killed in a strike in Nuseirat in Gaza. The Israeli military said it struck a vehicle carrying “an Islamic Jihad terrorist cell.”