Israeli aircraft bombed what the military described as a "terror tunnel" used by Hamas in Gaza and the militant Palestinian group said three of its fighters were killed in the strike early Friday.
The military said it carried out the strike after five of its soldiers were wounded as they tried to demolish another tunnel used by the Palestinian Islamic militant group Hamas that rules Gaza. That incident drew Israeli fire that killed one Hamas militant.
The latest violence was the deadliest along the volatile boundary since an eight-day Israeli military campaign last November aimed at stopping attacks from Gaza, a coastal strip that borders both Israel and Egypt.
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