Updated

Israel's prime minister is accusing Gaza militants of carrying out a rocket attack from Egypt's Sinai desert on a southern Israeli resort last week.

Benjamin Netanyahu said Sunday that "the shooters were apparently a terror squad that left Gaza and used Sinai territory to attack a city in Israel." He called the attack unacceptable and said Israel will charge a "heavy price."

A shadowy extremist Muslim Salafi group claimed responsibility for firing two rockets at Eilat. Nobody was hurt.

Islamic militants, some inspired by al-Qaida, have increased activity in Sinai since Egyptian President Hosni Mubarak was ousted in 2011. There are dozens of smuggling tunnels under the Sinai-Gaza border.

Hamas routinely arrests Salafi activists. Hamas sees them as a threat to its rule, while Salafis consider Hamas as too moderate.