A representative of a left-wing faction fighting alongside the Islamist Hamas movement in Gaza has told Newsweek his group is open to a temporary ceasefire in their war with Israel and called for greater efforts to establish a unity government among different Palestinian parties.

Hayya, said in a pre-recorded speech on Thursday the group had not rejected the latest U.S. proposal for a ceasefire with Israel but demanded changes that would secure the end of the war in the enclave.

Officials said Hamas was seeking changes on guarantees for a permanent end to war. That has long been the core sticking point with Israel.