BERLIN, Germany (CNN) -- German police conducted a series of raids across the country Wednesday as part of their investigation into nine citizens suspected of systematically trying to convert others to radical Islam.
Anton Winkler, spokesman for the Munich state prosecutor, said the suspects ranged in age from 27 to 47.
More than 130 officers fanned out across several cities, including Berlin and Bonn, searching houses and looking for illegal "jihadist" propaganda.
Prosecutors said the suspects had ties to an Islamic center in Neu-Ulm, a small township in southern Germany.
The Multi-Kultur-Haus was shut down in 2005 after authorities seized material urging Muslims to carry out suicide attacks in Iraq.
In September, German authorities arrested two German citizens who had converted to Islam and a Turkish resident who they said were in the advanced stages of plotting a bombing attack. The trio attended the Islamic center. E-mail to a friend