According the Miami Herald,
Falcon's quarterback, Michael Vick was about to board a plane at the Miami International Aiport, when security at the Concourse G checkpoint asked him to surrender his water bottle, which had an Aquafina label. Security regulations prohibit travelers from carrying bottles with more than 3 ounces of liquid through checkpoints.
After many requests, Vick eventually left the bottle behind and went to his gate. But after his initial reluctance to give up the bottle it aroused the suspicion of Transportation Security Administration screener Gertrude Joseph. She then pulled the bottle out of a recycle bin and notified her supervisor when she discovered what appeared to be a secret compartment that had a substance inside that smelled alot like marijuana.
At this point, the police are still reviewing the evidence and no charges have been filed, but that could be changed after a drug test is run on the substance found in the bottle.