MIAMI — Michael Vick reluctantly surrendered a water bottle to security at Miami International Airport that contained a residue ``closely associated with marijuana.'' Police said Thursday that no charges immediately were filed.

The 26-year-old Atlanta Falcons quarterback entered an airport concourse Wednesday morning with the 20-ounce bottle. He eventually handed it over and boarded his flight to Atlanta. But his initial reluctance to turn over the bottle aroused suspicion among airport security screeners, a police report said.

Two Transportation Security Administration screeners recognized the 6-foot, 215-pound Vick.

The bottle was found to have a hidden compartment that contained ``a small amount of dark particulate and a pungent aroma closely associated with marijuana,'' the report said. The compartment was hidden by the bottle's label so that it appeared to be a full bottle of water when held upright, police said.

Police said the bottle was sent to the Miami-Dade County crime lab for analysis. It could be weeks before any decision is made on whether to file charges, said Detective Alvaro Zabaleta.

``We'll do an analysis and see what it is. There's no sense of urgency to it,'' he said Thursday.

Vick did not immediately return a phone call early Thursday.

``We plan to look into the matter and discuss it with Michael Vick before having any further comment,'' Falcons spokesman Reggie Roberts said.

Vick's younger brother, Marcus, is a wide receiver for the Miami Dolphins. Michael Vick was the overall No. 1 draft pick in the 2001 NFL draft. In 2006, Michael Vick passed for more than 2,400 yards and also topped 1,000 yards rushing.