More than a million dollars worth of art is missing in Detroit, now the FBI is working to find who did it.

In all, 19 works of art, including a piece by Andy Warhol, were taken from a business in the Detroit neighborhood of "Corktown".

Investigators say the thefts happened in late April, and add that the pieces were not locked up.

The FBI is now offering a five thousand dollar reward for any information leading to an arrest, and are telling places like pawn shops to be on the lookout for anyone coming in trying to sell art.