Qatar announced Friday morning that efforts to renew a truce between Israel and Hamas "are continuing," despite the resumption of Israeli bombardment in the Gaza Strip.

Qatar, along with Egypt and the United States, have mediated the talks between Israel and Hamas.

"The State of Qatar expresses its deep regret at the resumption of the Israeli aggression against the Gaza Strip following the end of the humanitarian pause, without reaching an agreement to extend it," the Qatari Ministry of Foreign Affairs said in a statement. "The Ministry of Foreign Affairs confirms that negotiations between the two sides are continuing with the aim of returning to a pause. It also clarifies that the State of Qatar is committed, along with its mediation partners, to continuing the efforts that led to the humanitarian pause, and will not hesitate to do everything necessary to return to calm."

"The Ministry stresses that the continued bombing of the Gaza Strip in the first hours after the end of the pause complicates mediation efforts and exacerbates the humanitarian catastrophe in the Strip, and in this context calls on the international community to move quickly to stop the violence," the statement continued. "The State of Qatar reiterates its condemnation of all forms of targeting civilians, the practice of collective punishment, and attempts to forcibly displace and displace citizens of the besieged Gaza Strip, and its demand for an immediate ceasefire and to ensure the continuous and unhindered flow of relief convoys and humanitarian aid, in a way that meets the actual needs of the residents of the Strip."

-ABC News' Edward Szekeres and Morgan Winsor

U.S. Secretary of State Antony Blinken departed Tel Aviv on Friday morning at 7:45 a.m. local time as the cease-fire between Israel an Hamas ended and the two sides exchanged rocket fire.

When Blinken left, Hamas and Israel were still indirectly communicating on hostages. But Hamas had not handed over a list of potential releases when hostilities resumed. The Palestinian militant group, which rules the neighboring Gaza Strip, alleged it doesn't have any women or children left among its hostages to release. But Israel doesn't believe Hamas and also wants to see men and soldiers freed as well.

So far, Hamas has not provided a list of potential releases for Friday.

After landing in Dubai, Blinken did not answer shouted questions from reporters on the tarmac about the end of the temporary truce. But a senior official with the U.S. Department of State expressed hope a pause in hostilities could be reinstated as soon as the end of the day.

When asked about a report by The New York Times alleging Israel knew about Hamas' attack plan a year in advance, the official told reporters that it was clear there was a massive intelligence failure and there needs to be a reckoning. The official added that Israel will do an inquiry but its leadership is trying to delay it.

-ABC News' Shannon Crawford and Morgan Winsor

The Israel Defense Forces says Hamas has "violated the operational pause in fighting by firing toward Israeli territory," and therefore, the IDF has "resumed combat against" the militant group.

Earlier Friday morning local time, the IDF said the Aerial Defense Array had "successfully intercepted a launch from the Gaza Strip."

A short time after announcing the cease-fire had ended, the IDF said fighter jets were "striking Hamas terror targets in the Gaza Strip."

-ABC News' Dana Savir

The six Israeli hostages released Thursday night as part of the deal between Israel and Hamas are on their way to hospitals, according to the Israel Defense Forces. They will be reunited with family members at that time, the IDF said in a release early Friday morning local time.

"The 6 released hostages are currently on their way from the Hatzerim Base to hospitals, where they will reunite with their families," the IDF said in the release.

The cease-fire between Israel and Hamas was extended Thursday for one day in part due to mediators, who brokered another day. No update was provided about what will happen on Friday.

The United Nations said 138,000 liters of fuel entered Gaza on Saturday -- the highest amount in one day since the Israel-Hamas war began.

Trucks with food, water, medicine and medical supplies also entered Gaza on Saturday, according to the U.N. Office for the Coordination of Humanitarian Affairs.