DUBAI - Saudi security forces foiled an attack on the Grand Mosque in the Muslim holy city of Mecca on Friday, state television Al-Ekhbariya and Al Arabiya TV reported. Al Arabiya said security forces had found two groups of terrorists in Mecca and a third group in the city of Jeddah. The foiled attack targetted worshipers at the mosque, it said. Neither Al Arabiya nor Al-Ekhbariya gave any further details.