Israel said Thursday that it “deeply regrets” a deadly strike on Gaza’s only Catholic church, which killed three people.

Cardinal Pierbattista Pizzaballa entered Gaza on Friday to bring aid to victims of Israel's strike on the sole Catholic church in the Palestinian enclave, while he and a Vatican official questioned Israeli explanations for the incident.

On Thursday, an Israeli shell struck the compound of the only Catholic church in Gaza, killing three people, wounding 10 and damaging the building.