GOMA, Congo (AP) — Families of the victims of last week’s bomb attacks on two camps of displaced people in eastern Congo gathered to mourn their loved ones at a ceremony on Monday evening. During the ceremony in the city of Goma in the North Kivu Province, mourners sang and lit candles in tribute to the deceased.

The bombings at the Mugunga and Lac Vert displacement camps killed at least 18 people and injured another 32, according to the United Nations. It wasn’t clear which type of explosives were used in the attacks. Most of the victims were women and children.

Alimeti Kigiho, who survived the attack, had sought shelter from eastern Congo’s long war at the Mugunga displacement camp in February, only to be shaken by explosions while going to fetch water. He ran back to his tent, where he found the bodies of his wife and two young children, aged 6 and 2, in pieces.