A traffic stop in Detroit has led to serious suspicion , police said .

Detroit police officers pulled over a vehicle near Atkinson and Second streets on a traffic stop. When officers questioned the driver, the man said he was from West Africa.

In the trunk of the vehicle, police found license plates from different states, identifications cards and Arabic literature, Local 4 reported.

The man was taken in to custody on a traffic violation. Police will not comment on the items found in the vehicle, but did say they are working with federal authorities.