Man presumed dead after falling into Yellowstone hot spring

Searchers are being extra cautious because of the spring's dangerous temperature.

Tuesday's search comes on the heels of several other high-profile incidents at the park.

On Saturday, a 13-year-old boy was burned around his ankle and foot after his father, who had been carrying him, slipped in the hot spring in the park's Upper Geyser Basin.

In May, a Canadian film crew was accused of leaving an established boardwalk and stepping onto a geothermal feature where they snapped photos and took video of themselves.

Also last month, a Canadian man loaded a bison calf into his SUV because he thought it was cold. The calf later had to be euthanized because it could not be reunited with its herd.

In April, park officials warned people against approaching wildlife in the park after a woman was caught on video petting a bison.

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The Associated Press contributed to this report.