Hundreds of Palestinian prisoners agreed Monday to end a weekslong hunger strike after winning concessions from Israel to improve their conditions and limit detentions without trial, the two sides announced, resolving a standoff that united Palestinians behind one of their most emotional causes.

The deal ended one of the largest prison protests ever staged by the Palestinians. Two men had refused food for 77 days, the longest ever Palestinian hunger strike, leaving them in life-threatening conditions, according to their supporters, AP said.

With the Palestinians set to hold an annual day of mourning on Tuesday, both sides were eager to wrap up a deal to lower tensions.

Both Israeli and Palestinian officials, as well as representatives of Palestinian militant groups, confirmed the deal had been signed on Monday afternoon. Egyptian mediators had brokered the deal, in which Palestinian officials from the West Bank, militant leaders and prisoner representatives participated over several days.

Two men launched the strike on Feb. 27, and were joined by hundreds of others on April 17.

Among their demands: permission to receive family visits from the Hamas-controlled Gaza Strip and an end to solitary confinement.