Boulder police are looking for a man who hid in the tank of a portable toilet at a yoga festival before running off.

A woman at the Hanuman Festival went into the portable toilet Friday and noticed something moving in the tank when she lifted the lid, according to police spokeswoman Kim Kobel. The woman exited and asked a man nearby to look inside the tank.

The man told police he saw something moving under a tarp, and when he left the toilet he heard it lock from the inside.

A security supervisor then waited outside for the person to emerge. When he did, the supervisor tried to get him to sit down, Kobel said, but he ran off, covered in feces.

The suspect, who was not wearing a shirt or shoes when he came out of the toilet, was described as a white man in his 20s wearing gray sweatpants, around 6-foot-5 to 6-foot-8-inches tall with a skinny build and black hair.

Witnesses also said he had cuts on his back and arms. Some at the festival said he might be a transient who goes by the name “Sky.”

Kobel said police are not sure how he was able to squeeze into the tank or what he was doing there. He is being sought on suspicion of criminal attempt to make unlawful sexual contact.

Police are looking for any witnesses from the yoga festival who may have seen the incident. Anyone with information is asked to contact Detective Jeremy Frenzen at 303-441-1890.

People who want to remain anonymous can contact Crime Stoppers at 800-222-TIPS or crimeshurt.com. Those submitting tips through Crime Stoppers that lead to the filing of charges could be eligible for a reward of up to $1,000.

Contact Camera Staff Writer Mitchell Byars at 303-473-1329 or byarsm@dailycamera.com.