Al Jazeera Media Network said an Israeli bombardment on Wednesday killed 22 members of the family of its Gaza correspondent Moamen Al-Sharafi and condemned the operation.
"The horrific event unfolded today at Jabalia Camp, where Moamen's family sought refuge, leading to the killing of his father, mother, three siblings and his children," the network said in a statement.
The journalist, who was elsewhere during the bombardment, later appeared live on Al Jazeera. The victims included 17 other members of his extended family.
The network said it "will pursue all legal steps to holding accountable all those responsible for this crime."
Jabalia is in the northern Gaza Strip.
On Oct. 25, an Israeli raid killed several family members of Wael Dahdouh, another Al Jazeera correspondent in Gaza.