Israeli airstrikes on Rafah reportedly killed 50 people and injured more.
It comes after Hamas launched rocket attacks on Tel Aviv.
Palestinian medics said the airstrike hit the heads of displaced people in southern Gaza City, Sky News reported.
The Israel However, the armed forces said military aircraft struck a “Hamas compound” from which “key Hamas terrorists were operating.”
The Gaza Health Ministry, a Hamas-run organization, says at least 50 people have been killed in the strikes.
Hamas itself condemned the attack, saying it was “an area full of hundreds of thousands of displaced people.”
The strike is said to have affected the Tel Al Sultan neighborhood in western Rafah.
The area is home to thousands of people seeking shelter, many of whom have fled the eastern parts of the city Israel launched its ground offensive in Rafah two weeks ago.
The Israeli Defense Forces (IDF) said in its statement: “The attack was carried out against legitimate targets under international law, using precision munitions and based on accurate intelligence indicating Hamas use of the area.
“The IDF is aware of reports indicating that as a result of the attack and the fire that was ignited, several civilians in the area suffered harm. The incident is currently under investigation.”
The attack comes just days after the International Court of Justice announced this Israel to stop his offensive in Rafah.
Earlier on Sunday, Hamas claimed it had launched a rocket attack on Tel Aviv. There were no reports of any casualties.
Israeli military officials claimed eight projectiles were fired Israel from Gaza.
They were said to have been launched from Rafah.
Although the IDF said its 'Iron Dome' defense system had intercepted some missiles.