At least 12 people including children were killed overnight in Gaza by Israeli strikes, hospital workers said on Wednesday. The pre-dawn strikes hit three houses in the urban Nuseirat refugee camp. Among the dead were three children, including two brothers whose bodies arrived at the Al-Aqsa Hospital in pieces.

The strikes come after more than two dozen people were killed earlier this week in Gaza City and Beit Lahiya. Israel ended its ceasefire with Hamas last month. It has cut off the territory’s 2 million Palestinians from all imports, including food and medicine, since the beginning of March in what it says is an attempt to pressure the militant group to release hostages.