FREDERICK, Colo.—A Catholic priest faces an indecent exposure charge after police said he went jogging in the nude about an hour before sunrise.

The Rev. Robert Whipkey told officers he had been running naked at a high school track and didn’t think anyone would be around at that time of day, a police report said.

He told officers he sweats profusely if he wears clothing while jogging. “I know what I did was wrong,” he said in the report.

Whipkey did not return phone messages. His attorney, Doug Tisdale, told the Longmont Times-Call that Whipkey had no comment.

Whipkey, 53, was arrested June 22 in this small town about 20 miles north of Denver. An officer said he saw a naked man walking down the street at 4:35 a.m. The U.S. Naval Observatory Web site said sunrise that day in Frederick was 5:31 a.m.

The officer said when he shined his flashlight at the man, he covered himself with a piece of clothing he was carrying.

The Archdiocese of Denver said it takes the incident seriously but is awaiting the outcome of the case. Whipkey, who also officiates at parishes in the nearby towns of Mead and Erie, remains an active priest.

If convicted of indecent exposure, a misdemeanor, he would have to register as a sex offender, prosecutors said.