Hamas has released three male hostages and Israel is to release dozens of Palestinian prisoners as part of a fragile ceasefire agreement that has paused fighting in the Gaza Strip after more than 15 months of war.

Hamas has handed American-Israeli hostage Keith Siegel, 65, over to the Red Cross, the third hostage to be released Saturday as part of a ceasefire deal with Israel. Siegel walked onto a stage set up by the sea in Gaza City before militants handed him over to waiting Red Cross officials,

The increasingly theatrical and threatening events have angered Israel and put a cease-fire deal at risk.