French authorities have detained seven suspected Islamic militants who allegedly trained to fight in Iraq by firing weapons in the woods of eastern France, police officials said Friday. Six of the men are French nationals of Bosnian origin, while the seventh is Algerian, said the officials. The men ranged in age from their early 20s to mid 40s. At least one was a student; another is a teacher. They were arrested Tuesday in two towns in eastern France, Besancon and Pontarlier. Dozens of youths, some just young teens, are thought to have left from France for Iraq to join the insurgency. Some have been killed there. Police are particularly worried that some French youths with roots in North Africa may be traveling to Iraq without being noticed, traveling via countries like Algeria and Morocco.