An Israeli strike in Gaza just before the kickoff of the Egypt-Argentina World Cup match killed Mohamed al-Wahidi, a top Palestinian aid official who helped organize public screenings of the game across the enclave, according to local health officials.

The blast hit a car in Gaza City’s Sabra neighborhood at dusk Tuesday. Shifa Hospital’s director, Dr. Mohamed Abu Selmiya, said al-Wahidi, a 10-year-old boy named Hamza al-Deri, his 8-year-old brother Fari, and the vehicle’s driver, Ahmed Daghmush, were killed and the four bodies were brought to the hospital.

Israel’s military said al-Wahidi was not the intended target. It said it was aiming at a Hamas militant and was checking whether Daghmush was the target. Abu Selmiya said Daghmush was a taxi driver and had no known militant links.

Al-Wahidi worked for the Egyptian Committee in Gaza, the relief arm of the Egyptian government, which provides food, shelters and other assistance. The committee organized the initiative to set up screens across Gaza to watch matches, and many Palestinians have followed Egypt’s World Cup run through these community screenings.

The strike was reported as occurring during a fragile cease-fire period. Israel said its strikes target militants and that it regrets harm to civilians. Palestinian officials said more than 1,000 people have been killed since the truce took effect in October.