Explosive devices were found in the Colorado River Sunday by a diver near Castle Rock Campground.
The La Paz County Sheriff's Department said a person snorkeling found two devices in the water at the Parker Strip campground. Campers reported hearing an explosion the night before but they didn't know what caused it, the sheriff's department said.
Investigators believe a person was taping the equivalent of quarter-sticks of dynamite to rocks and throwing them in the river. Two un-detonated devices were located and safely removed.
Divers from the La Paz County Sheriff’s Office, Buckskin Fire Department and volunteers, made several shoreline sweeps to make sure no other devices were left behind.
The devices were found just upstream from Buckskin Mountain State Park a day after thousands of people participated in the Parker Tube Float in the same area.