Four tourists from India were detained by transit police for the Northern Indiana Commuter Transportation District (NICTD) after they were seen filming landscape from inside a moving commuter train.
According to NICTD police officials, the men were held for questioning about suspected terrorist activity, and their videotapes were turned over to the FBI's Joint Terrorism Task Force.
The men were reportedly filming on both sides of the train, which is not uncommon on the NICTD’s South Shore Line, the nation's last inter-urban railroad. But suspicion grew when the men tried to hide their camcorders from the train conductor.
They were later arrested by Chicago Metra police when the train they were traveling in pulled into a station. All four were released after their names cleared terrorist databases.