Hamas on Thursday signalled its rejection of Israel's latest truce proposal and called for a "comprehensive" deal to end the 18-month-long war.
The Palestinian militants' chief negotiator spoke out after civil defence rescuers in Gaza said new Israeli air strikes killed at least 40 people, most of them in camps for displaced civilians, as Israel pressed its offensive in the Palestinian territory.
The Israeli military said it was looking into reports of the strikes.
A Hamas source told AFP that the group sent a written response Thursday to mediators on Israel's latest proposal for a 45-day ceasefire. Israel had wanted the release of 10 living hostages held by the group, according to Hamas.
It also called for the freeing of 1,231 Palestinian prisoners from Israeli jails and the entry of humanitarian aid into Gaza, which has been under complete blockade since 2 March.
The proposal called for Hamas to disarm to secure a complete end to the war, a demand the group rejects.
"Partial agreements are used by (Israeli Prime Minister) Benjamin Netanyahu as a cover for his political agenda... we will not be complicit in this policy," Hamas's chief negotiator, Khalil al-Hayya, said in a televised statement.
He said Hamas "seeks a comprehensive deal involving a single-package prisoner exchange in return for halting the war, a withdrawal of the occupation from the Gaza Strip, and the commencement of reconstruction" in the territory.
A previous ceasefire and hostage release deal began on 19 January but collapsed two months later.
Israel offered to extend the first phase, while Hamas insisted that negotiations be held for a second phase, as outlined by Joe Biden when he was US president.
Israel resumed intensive bombing of Gaza on 18 March.
