GUADALUPE COUNTY, Texas -

The search for a man who went missing in the Guadalupe River has been called off for the night.

A large fire department boat brought to conduct dragging operations along the bottom of the shallow river couldn't get into the water. Authorities then brought a smaller Game Warden boat, but still were unable to find the man.

Four others, including three women and a man, according to Seguin Fire Chief Scott Mycue, were pulled to safety. They had been clinging to tree branches.

"There is an area here that you can swim in, shallow, and then of course it drops off very deep," he said. "There were inner tubes out there they were floating on. Somehow they became dislodged from them."

A firefighter had to swim to their location and take them to safety one by one. No one knows what happened to the man, but the people he'd been on the river with said he went under about 30 minutes before rescuers could arrive on scene.

"He could have fallen off his tube, didn't know if he could swim," said Mycue. "We're not sure at this point."

Joshua White rushed to the banks of the river, just off FM 1117, southeast of Seguin, when he heard the news. His brother fishes here often.

White says people don't know the area, and that makes a dangerous river more dangerous.

"It's typical back country," White said. "People, it's mainly for fishing, this is not for swimming."

White believes the recent alcohol restrictions upstream may be contributing to rural areas like this becoming more populated. New Braunfels city leaders instituted a can ban on the Guadalupe River in the city limits. White thinks it could be turning recreational users of the river toward more remote locations like this.

"Since everything had happened in New Braunfels with all this stop beer thing, everybody were flocking to everywhere where they can just have a good time."

Authorities will be back on the scene at first light to search for the man. White says his thoughts are with friends and family.

"I can only imagine what they're going through right now," he said.