Three British male teenagers have been detained in Turkey and prevented from travelling to Syria, police said Sunday. Two are aged 17 and from **rthwest London while the third is 19 years old, and all Three are being held by Turkish authorities. Scotland Yard police headquarters in London said counter-terror ******rs were told Friday that the 17-year-olds had "gone missing and were believed to be travelling to Syria". "******rs alerted the Turkish authorities who were able to intercept all Three males, preventing travel to Syria.