German prosecutors say they have arrested a German and a Turk suspected of ties to al-Qaida and to a foiled 2007 terrorist plot to attack U.S. and other targets.  Federal prosecutors say both are aged 27 and were arrested on Friday in the greater Frankfurt area. The German man is suspected of membership in the Islamic Jihad Union. The Turk is suspected of supporting the same group. The Islamic Jihad Union has origins in Central Asia and links to al-Qaida. Prosecutors believe the pair had direct links to three alleged members of a cell who were arrested in 2007 and charged earlier this month. The pair were being held in detention on Friday pending the results of a criminal investigation.