Updated

German police say they are investigating two Bosnian men suspected of breaking arms control laws after discovering a stash of hand grenades in their car Monday.

Federal police said Tuesday that officers first detained the men, who had stopped in a no-parking zone outside Dresden's main train station, because they suspected them of immigration offenses.

While searching their Mercedes SUV a police sniffer dog found 17 hand grenades hidden behind the lining of the trunk.

The 28 and 17-year-old men, whose names weren't released, will be brought before a judge Tuesday to decide whether to keep them detained pending further investigation.