About 900 police officers raided mosques, prayer rooms and homes across Austria early Friday in an operation against suspected jihadi recruiters and alleged financiers of the ISIS terror group, local media reported. Prosecutors confirmed to NBC News in a statement that 13 people were arrested in the raids. The raids were the culmination of a two-year investigation into people suspected of recruiting young people to fight in Syria. A Vienna-based Bosnian preacher, who was the main suspect, was among those arrested, according to the media reports.