BEIRUT: The main Western-backed Syrian opposition group has postponed an upcoming meeting in Turkey where it was to choose a prime minister for a transitional government in rebel-held areas.

The Syrian National Coalition said in a statement posted on its Facebook page Thursday that the March 2 conference in Istanbul was canceled for "logistical reasons." It said it would announce a new date as soon as possible.

The opposition umbrella group has struggled to agree on the leadership of a transitional administration since the Coalition was formed late last year. The group has met on previous occasions to select an interim prime minister, but has failed to reach a compromise.

The announcement comes despite a U.S. pledge to provide an additional $60 million in assistance to the opposition.