An aid worker who was part of Belgium’s development aid efforts in the Gaza Strip died in an Israeli strike, the Belgian government said on Thursday, adding it was summoning the Israeli ambassador over the incident.

Belgium’s development minister Caroline Gennez said in a statement that 33-year-old Abdallah Nabhan and his seven-year-old son died after a bombardment by the Israeli army in the eastern part of the southern city of Rafah.

Nabhan, whose nationality was not disclosed, worked for the Belgian Enabel agency, assisting small businesses.

“I will summon the Israeli ambassador to condemn this unacceptable act & demand an explanation,” said Belgian foreign minister Hadja Lahbib in a post on social media platform X.

According to the government in Brussels, at least seven people were killed by the strike on a building that housed about 25 people, including displaced people from other parts of the Gaza Strip.

Israel is seeking to eradicate Hamas, which controls Gaza, after the militant group killed 1,200 people.