Updated

Spanish police say drug traffickers used a sophisticated system of floating backpacks with a tracking system to try to smuggle 900 kilograms (2,000 pounds) of cocaine into the country.

The Civil Guard's website on Tuesday said the drug was found in 37 backpacks floating in waters off a beach near the eastern city of Valencia.

The packs were tied to each other and had a tracking system so that they could be located and picked up by traffickers. Police said the drug had been dropped off from a vessel further out to sea.

A police statement said five Spaniards were arrested and 72,000 euros ($97,000) and jewelry confiscated.