TRIPOLI (REUTERS) - Libya's Parliament passed a law on Sunday banning anyone who held a senior position during Muammar Gaddafi's 42-year rule from working for the new administration, a move that could force the Prime Minister to step down.

Prime Minister Ali Zeidan was a diplomat before defecting in 1980 and joining the opposition. The wording of the law adopted has not made it immediately clear whether or not he was senior enough to be barred from the new government.