Israel has agreed to put in place four-hour daily humanitarian pauses in its assault on Hamas in northern Gaza, the White House said Thursday, as President Joe Biden pressed Israelis for a multi-day stoppage in the fighting in a bid to negotiate the release of hostages held by the militant group.

Biden had asked Israeli Prime Minister Benjamin Netanyahu to institute the daily pauses during a Monday call and said he had also asked the Israelis for a pause of at least three days to allow for hostage negotiations.

“Yes,” Biden said, when asked whether he had asked Israel for a three-day pause. “I’ve asked for even a longer pause for some of them.” He added there was “no possibility” of a formal cease-fire at the moment and said it had “taken a little longer” than he hoped for Israel to agree to the humanitarian pauses.

National Security Council spokesman John Kirby said a daily humanitarian pause would be announced Thursday and that the Israelis had committed to announcing each four-hour window at least three hours in advance. Israel, he said, was also opening a second corridor for civilians to flee the areas that are the current focus of its military campaign against Hamas, with a coastal road joining the territory’s main north-south highway.

Similar short-term pauses have occurred over the past several days as tens of thousands of civilians have fled southward, but Thursday’s announcement appeared to be an effort to formalise and expand the process, as the U.S. has pressed Israelis to take greater steps to protect civilians in Gaza.

Asked in a Fox News interview that aired Thursday about the prospect of a daily humanitarian pause, Netanyahu replied that “the fighting continues against the Hamas enemy, the Hamas terrorists, but in specific locations for a given period—a few hours here, a few hours there—we want to facilitate a safe passage of civilians away from the zone of fighting. And we’re doing that.”