White House say they believe a US citizen will be among hostages released

White House National Security Adviser Jake Sullivan said there was "reason to believe" a US hostage would be  among those released from captivity in Gaza on Sunday as part of a truce deal.

"We have reason to believe that one of those Americans will be released today," Sullivan told NBC.

"We have a sense of who it is but I am just not in a position to confirm it,” he added.