A bundle of what authorities suspect is cocaine was found over the weekend on a Mobile County beach.

People walking on West End Beach on Dauphin Island spotted the bundle on Saturday, the Mobile County Sheriff’s Office said, according to WKRG.

Dauphin Island police used an ATV to recover the packages from the beach before turning the bundle over to the sheriff’s office.

It was unclear how long the suspected cocaine was on the beach, but the sheriff’s office said it appeared the packages were there “for some time.”

Drug traffickers sometimes use boats and airplanes to cross the Gulf of Mexico, and a Gulf Shores police spokesman earlier told AL.com that officials usually get calls about once a year about smaller amounts of drugs being found on beaches. With few clues to go on, police rarely determine the origin of the drugs.

Cocaine swept in from the Gulf last turned up on Dauphin Island in 2009, when two bricks were found by beachgoers.