Israeli fire killed three people near a ceasefire line in Gaza yesterday, medics said, as US envoys in Israel tried to push forward the fragile truce that faced its gravest test so far over the weekend.

A Palestinian official close to ceasefire talks said efforts by Arab mediators and the United States would be stepped up, after helping restore calm in the enclave following a day of intense bombardment that killed at least 45 people.

Israel said it launched the strikes across the enclave on Sunday in response to a Palestinian attack that killed two soldiers who were operating within the agreed deployment line in Rafah, in southern Gaza, in what it described as a blatant violation by Hamas of the truce.

Despite repeated bursts of violence in the week since the truce was agreed, the US envoys Steve Witkoff and President Donald Trump's son-in-law Jared Kushner met Israeli Prime Minister Benjamin Netanyahu yesterday, aiming to corral Israel and Hamas to get the ceasefire plan back on track.

US Vice President JD Vance is also due to visit Israel today, Israel's airports authority said. High level US diplomacy in the region, with talks also due later yesterday with Hamas in Egypt, underscore the importance of cementing the ceasefire to Trump, who last week proclaimed "the historic dawn of a new Middle East".

Local health authorities said Israeli tank fire had killed three people in the Gaza City suburb of Tuffah. The Israeli military said forces had fired at Hamas members who crossed the yellow line to remove the threat, reports Reuters.

US President Donald Trump said Sunday that a ceasefire in Gaza was still holding after Israel carried out the deadly strikes on the territory.

Asked by reporters whether the truce was still in effect, Trump said: "Yeah, it is". The US president, who helped broker the deal, also suggested that Hamas leadership was not involved in any alleged breaches, instead blaming "some rebels within".

"We want to make sure that it's going to be very peaceful with Hamas," Trump said. "It's going to be handled toughly, but properly."

Meanwhile, Israel's Kerem Shalom border crossing into Gaza reopened for aid yesterday, an Israeli military official said.

Foreign ministers of EU countries are meeting in Luxembourg to discuss a range of issues, including the situation in Gaza, reports Al Jazeera online.

Prior to the meeting, EU's foreign policy chief, Kaja Kallas, was asked about sanctions the EU was putting forward against Israeli officials as well as trade restrictions to pressure Israel.

Meanwhile, Israeli forces arrested at least 11 people in raids across the occupied West Bank. Four young men from the village of Amatin, in Qalqilya, were arrested. In Ramallah, four people were arrested and 15 detained during a large-scale raid on several homes in the village of al-Mughayyir.

On Sunday, US Vice President JD Vance called on Gulf Arab countries to establish a "security infrastructure" to ensure that Hamas disarmed -- a key part of the peace deal.