At least nine people have been killed and several others injured in an Israeli strike in Beit Lahia, northern Gaza, the enclave’s Government Media Office said Saturday, making it the deadliest incident since a ceasefire went into effect in January.

The Al-Khair Foundation says staff were setting up a camp for displaced Gazans in Beit Lahia Saturday when back-to-back Israeli strikes hit their vehicles.

Several were critically injured as the strike hit a car, with casualties inside and outside the vehicle, health officials told Reuters. Witnesses and fellow journalists said the people in the car were on a mission for a charity called Al-Khair Foundation in Beit Lahiya,