At least 12 other passersby were injured during the attack, the sources added.
Israeli warplanes fired at least eight missiles targeting the empty building to the west of Gaza city, causing extensive damage.
Earlier Saturday, three Palestinians were injured as Israeli warplanes carried out a fresh wave of airstrikes targeting multiple locations and agricultural lands in Gaza Strip.
Saturday’s attacks were the largest since 2014 when the Israeli army launched a devastating war on the Gaza Strip, killing more than 2,000 Palestinians and injuring thousands. (PIC)