File Photo: Members of the Islamic State militant group. (Associate Press)
The Islamic State jihadist group's affiliate in Egypt claimed responsibility for a rocket attack from the Sinai Peninsula into southern Israel on Friday.
"Three Grad rockets were fired at Jewish positions in occupied Palestine," the "Sinai Province" group said in a statement on Twitter.
An Israeli military spokesman said earlier that two rockets fired from Sinai exploded inside Israeli territory without causing casualties.
The IS-linked group said the rocket fire was in retaliation for alleged Israeli support for Egypt's armed forces on Wednesday when the jihadists attacked army checkpoints in northern Sinai.
Egypt's military deployed F-16 warplanes to bombard IS jihadists who battled troops after launching their surprise dawn attack.
Dozens were killed in what was IS's boldest attack yet in the strife-torn Sinai.
© Thomson Reuters 2015