Israeli forces killed at least 11 Palestinians in separate strikes in the Gaza Strip on Thursday, medics said, hours after the military said it had hit the site of a failed militant rocket launch.

Medics said an Israeli airstrike killed at least four people and wounded three others, including children, in a tent in the western area of Khan Younis in the southern Gaza Strip.

Another strike killed a person east of the city, near where Israeli forces operate.

Later on Thursday, medics said a man was killed in an Israeli strike on a school sheltering displaced families in Jabalia in northern Gaza, while another strike killed a person in a tent near Deir al-Balah in the central Gaza Strip.

Four other people were killed in a separate strike in the Zeitoun neighbourhood of Gaza City, bringing Thursday’s death toll to at least 11, according to local medical sources.

Earlier, the military said it had struck a launch site shortly after the firing of a rocket that had failed to reach Israeli territory.

It accused Hamas of violating the ceasefire twice in the past 24 hours. A source from the Palestinian militant group told Reuters it was checking the allegation.

A ceasefire agreed in October has not progressed beyond the first phase, under which major fighting stopped, Israel withdrew from less than half of Gaza and Hamas fighters released live hostages, and human remains in return for detained Palestinians.

Israel and Hamas have accused each other of major breaches of the ceasefire deal and remain far apart on the more difficult steps envisaged for the next phase.

Israel has continued to carry out air strikes and targeted operations across Gaza.

The Israeli military said it views “with utmost severity” any attempts by militant groups in Gaza to attack Israel.

A Hamas official told Reuters the group had documented more than 1,100 Israeli violations of the ceasefire since October and had urged mediators to intervene.

Hamas has refused to disarm and has been reasserting its control. Israel has said it will resume military action if Hamas is not disarmed peacefully.