VIENNA, Austria -- The Austrian state prosecutor's office says a 14-year-old boy has been arrested on suspicion of planning to place a bomb in a busy Viennese train station and could be charged with belonging to a terrorist organization.

A spokeswoman of the state prosecutor's office, Michaela Obenaus, on Wednesday identified the suspect only as an Austrian citizen with Turkish roots who has lived for eight years in Austria.

Obenaus said the juvenile told police that he wants to fight on the side of Islamic extremists, had researched building a bomb on the internet and had mentioned Vienna's downtown Westbahnhof rail station as a possible target.

She said he was arrested Tuesday in the city of St. Poelten, west of Vienna.