Rocket sirens sound in city of Ashkelon and nearly Kibbutz Zikim

Rocket sirens are triggered in the city of Ashkelon and nearby community of Kibbutz Zikim, the military says.

There are no immediate reports of injuries or damage.

Earlier Islamic Jihad promised revenge for the deaths of three Gaza fisherman Sunday, who Hamas claimed were killed by a boobytrapped Israeli drone they caught in their net.