ISLAMABAD (Reuters) - Legislators from ousted Pakistani prime minister Imran Khan's party announced they are resigning en mass from the lower house of parliament on Monday in protest against the formation of a new government by his political opponents on Monday.

       "We are announcing we are all resigning," Shah Mahmood Qureshi, former foreign minister and vice president of Khan's party, said in a speech in the assembly ahead of the vote to elect a new prime minister.

       Khan was ousted in a no-confidence vote by the same assembly in the early hours of Sunday.

       (Reporting by Asif Shahzad; Editing by Toby Chopra)