Xinhua world news summary at 1530 GMT, May 27

GAZA -- Hamas has informed the mediators that it would not participate in any negotiations on a ceasefire and a prisoner exchange deal after Israel's Rafah attack on Sunday night, a source in the movement said on Monday.

The source told Xinhua that the decision came in response to the Israeli army targeting the tents of displaced civilians in the northwest of the city of Rafah, killing and wounding dozens of the