MANKATO, Minn. - A Mankato man is accused of photographing a woman as she tanned nude at a gym.

The Free Press of Mankato reports ( http://bit.ly/UbzRKa) the woman was tanning earlier this year when she opened her tanning bed and saw a hand over the wall holding a cellphone.

Prosecutors say surveillance video shows 28-year-old Gerhardt Francis Zerwas going into the neighboring booth about 15 minutes after the woman entered hers. Authorities say he can be seen walking out of the booth 10 minutes later and running from the building.

Zerwas told police he was in the booth to stretch his shoulder, and he might have had his phone in his hand while stretching.

He's due in court Dec. 20 on a misdemeanor charge of interfering with privacy in a tanning booth.

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Information from: The Free Press, http://www.mankatofreepress.com