Tunisia's ruling Islamist party Ennahda and the opposition have agreed to extend their negotiations after failing to choose a new prime minister to steer the country out of its political crisis. "We have not reached a consensus on the prime minister... We are going to continue discussions for another day or two in order to arrive at a consensus," said senior Ennahda official Ameur Larayedh, after around 12 hours of talks on Saturday. According to politicians contacted by AFP, the negotiators could not decide between Mohamed Ennaceur, 79, supported by the opposition, and Ahmed Mestiri, 88, backed by Ennahda and its allies. Both are well respected and served under the late Habib Bourguiba, who led the fight for Tunisia's independence from its French colonial masters and served as its first president (1957-1987).