ANKARA (AFP) - Turkish anti-terror police Tuesday rounded up 37 people with suspected links to the Al-Qaeda extremist network in early-morning raids across five provinces, Anatolia news agency reported. Officers detained 14 suspects in the southern province of Gaziantep where the security forces, backed by armoured vehicles, raided 11 locations in two districts, Anatolia said. Seven of the suspects detained in the city had been to Afghanistan to receive armed training in militant camps, it added. Public television TRT aired a video tape seized in the operation, said to be shot in Afghanistan, in which militants demonstrated how to make a bomb. Four people were detained in the neighbouring provinces of Sanliurfa and Adana, and two others in the central city of Konya among them an Uzbekh national wanted in his home country for Al-Qaeda links, Anatolia said. In the province of Kahramanmaras, which also borders Gaziantep, police rounded up 17 alleged members of an unnamed group with suspected links to Al-Qaeda and continued to look for three others, Anatolia said. A Turkish newspaper reported in March that Ankara had received US intelligence that Al-Qaeda militants could be plotting attacks on foreign targets in Turkey. Following police interrogations, the suspects are to appear before courts, which will decide whether there is enough evidence to bring formal charges against them. The raids follow the arrest earlier this month of seven people accused of having links to Al-Qaeda, in simultaneous operations in the western province of Eskisehir. A Turkish cell of Al-Qaeda was held responsible for truck bombs against two synagogues, the British consulate and a British bank in Istanbul in 2003, which killed 63 people, including the British consul, and left hundreds injured. Seven men were jailed for life in 2007 over the bombings, among them a Syrian national who masterminded and financed the attacks. In January, a suspected Al-Qaeda militant was killed and three others captured in a shootout with the police in Istanbul after the group attempted to rob a post office.