Hamas confirmed that Saleh al-Arouri, the groupâs top deputy, had been killed in the explosion, along with two leaders of the groupâs armed wing. Two U.S. officials said Israel was responsible for the strike.Hamas confirmed that Saleh al-Arouri, the groupâs top deputy, had been killed in the explosion, along with two leaders of the groupâs armed wing. Two U.S. officials said Israel was responsible for the strike.