Per Ynet:
Hamas claimed full responsibility for the lethal shooting attack in south Mount Hebron Tuesday in which four Israelis were killed.
Abu Ubaida, spokesman for Izz al-Din al-Qassam said: “Qassam Brigades announces its full responsibility for the heroic operation in Hebron. Our men have returned safely to their bases.”
He further noted, “This attack is a chain in a series of attacks, some have been executed, and others will follow.”