French anti-terrorism authorities are keeping five men in custody without charge while they investigate a suspected plot.
The detained suspects are believed to be under orders from Syria, and may have been preparing attacks in Strasbourg and Marseille.
French authorities arrested the five men late last week, adding that a cellphone and computers obtained during the raid found searches for the locations of officials who may have been targeted.
A security official stated investigators have determined their searches included an amusement park, however, the official added it is too early to know where they planned to attack.
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