Underwater drones and sonar devices were used to find the body of a 14-year-old who drowned Saturday at Newcastle Reservoir, near Cedar City.

According to a news release from the Iron County Sheriff’s Office, a 14-year-old boy was kayaking with his 17-year-old brother on Saturday afternoon when the two began to “attempt to knock each other out of their kayak.”

The 14-year-old went under in an area with about 10-12 feet of water, the sheriff said, but reportedly didn’t know how to swim.

Neither of the boys were wearing life jackets. When the 911 call was placed, the 14-year-old had already been underwater for about 10 minutes, the sheriff said.

The boy’s body was found Sunday around 5 a.m.