Spanish police say they have seized more than 3,600 kilograms (4 tons) of hashish piled inside four luxury SUVs discovered in a warehouse in the southwestern Mediterranean coastal city of La Linea de la Concepcion.A statement Monday says an investigation began when police agents learned that a crime group smuggled in a large amount of drugs into Spain from Morocco, landing on the coast near the Atlantic port city of Cadiz.Soon afterward, police found four vehicles including a Porsche Cayenne and two four-wheel-drive BMWs with tinted windows that were stacked full of large parcels of drugs, including on all the passenger seats.No one has been arrested yet in the investigation, which is ongoing.