A delegation from Palestinian militant group Hamas will visit Cairo on Saturday, a Hamas official told Reuters, amid expectations that they will deliver a written response to an Israeli proposal on a Gaza ceasefire and hostage release. The Hamas official, who declined to be identified, spoke on Friday after CIA Director William Burns arrived in the Egyptian capital for meetings about the conflict in Gaza, according to an Egyptian security source and three sources at Cairo airport. Egypt made a renewed push to revive negotiations late last month.