A top Hamas leader and at least five others were killed in a strike in Beirut on Tuesday, a Hamas official said.
The leader, identified by the official as Saleh Arouri, was second in command in Hamas and the head of Hamas in the West Bank.
Lebanese Security Services said six people were killed in the strike, which Hamas blamed on Israel.
An Israel Defense Forces spokesperson declined to comment on the incident, but told ABC News that Israel “is on high alert and prepared for any scenario.”
“I want to be clear we are focused on the fight against Hamas,” the spokesperson, Rear Adm. Daniel Hagari, added.