The body of a 26-year-old Austin man was found Sunday morning after he disappeared under the San Marcos River during a tubing trip over the weekend, the Texas Parks and Wildlife Department said.

Ryan Hyman was reported missing on Saturday around 7:30 p.m. to the Guadalupe and Caldwell county sheriff's offices, the department said. Hyman was tubing on the San Marcos River when he left his tube to swim after another tube that had drifted away from his group.

While he was swimming toward the tube, he began to struggle in the water, which was congested with other tubers, the department said. Two people noticed Hyman was struggling and jumped in the water to get to him. He disappeared under the water before they could reach him, the parks department said.

The South Hays Fire Department Dive Team recovered Hyman's body Sunday morning near Texas State Tubes, a tubing outfitter located in between San Marcos and Martindale, the department said. Searchers used sonar provided by Texas game wardens.

Investigators do not know if alcohol was a factor in Hyman's death but the Travis County medical examiner's office will be performing an autopsy, the Guadalupe County sheriff's office said.

Hyman, who is originally from Redondo Beach, California, was living in Austin, the parks department said.