A senior Hamas official has told the BBC that mediators have intensified their efforts to broker a new ceasefire and hostage release deal in Gaza, but that negotiations with Israel remain stalled.

The comments came as US President Donald Trump said "great progress" was being made since Israel and Iran ended their 12-day war on Tuesday, and that his envoy Steve Witkoff thought an agreement between Israel and Hamas was "very close".

Israeli attacks across Gaza on Wednesday killed at least 45 Palestinians, including some who were seeking aid, the Hamas-run health ministry said.

Meanwhile, the Israeli military announced that seven soldiers were killed in a bomb attack on Tuesday claimed by Hamas.

"I think great progress is being made on Gaza, I think because of this attack that we made," Trump told reporters in Brussels on Wednesday, referring to the US air strikes on Iranian nuclear facilities carried out at the weekend amid the conflict between Israel and Iran.

"I think we're going to have some very good news. I was talking to Steve Witkoff... [and] he did tell me that Gaza's very close."

Shortly after Trump spoke, the senior Hamas official told the BBC that mediators were "engaged in intensive contacts aimed at reaching a ceasefire agreement".

However, he added that the group had "not received any new proposal so far".

An Israeli official also told the newspaper Haaretz that there has been no progress in the negotiations, and that major disagreements remained unresolved.