A Phoenix woman was reportedly gored by a bison in Yellowstone National Park after getting close to the animal, according to the National Park Service.

The incident occurred on Tuesday morning. The 47-year-old woman and another person were walking near the Lake Lodge near Yellowstone Lake and encoutered two bison, according to the National Park Service.

The duo turned to walk away when one of the bison charged, giving the woman serious injuries to her chest and stomach. No information on her condition was available after she was from to Eastern Idaho Regional Medical Center following the incident.

Officials said they did not know how close the two were to the bison when it charged. The incident remains under investigation, the park service said.

Officials recommend visitors to the park stay more than 25 yards away from animals at Yellowstone, and they should never approach wild animals.

Those animals also can become more quickly agitated during mating season, known as rut, which occurs from mid-July through mid-August. Officials suggest using extra caution during those times.