Some Hamas leaders are under US indictment and Washington believes they should be turned over to the United States, he said.The US had asked Qatar to close the Hamas offices in that country in a move to pressure the group to show flexibility in negotiations to secure the release of the remaining 101 hostages in Gaza.

The State Department said several Hamas leaders have been indicted in the United States and "should be turned over."

The U.S. has warned Turkey against harbouring terrorists amid reports that Hamas leaders landed in the NATO Nation last week after Qatar pulled out as mediator in the Gaza ceasefire talks. The U.S. State Department said that Washington will convey to Ankara that there can't be business as usual with Hamas leaders.