A battery-powered surfboard loaded with 20 pounds of crystal methamphetamine was spotted along a Tijuana beach on Tuesday night, Tijuana police said.

The surfboard was spotted by beachgoers in the area of Playas de Tijuana at about 7:30 p.m. People noticed the surfboard had strange plastic wrapped around it and notified authorities.

Responding investigators examined the board and dismantled it to find a double bottom, with 22 clear plastic containers filled with drugs secured with tape.

The board also had a metal pipe and a small propeller connected to a turbine powered by eight batteries.

Investigators believe water entered the compartment and caused the power to go off, and the surfboard eventually washed up on shore.

There was no word Wednesday afternoon from Tijuana police about arrests.