PROVO — An alert lifeguard spotted a 71-year-old swimmer allegedly abusing children.

Wednesday afternoon, the Orem man was swimming in the wading area of the children's pool at Seven Peaks when his strange movements caught the attention of a lifeguard, according to an affidavit of probable cause filed in 4th District Court.

The lifeguard saw the man approach a 13-year-old girl and place his hand on her chest over her swimsuit, according to the affidavit.

The lifeguard told police he thought he saw the man trying to apologize, according to the affidavit.

While calling security, the lifeguard saw the man approach a 6-year-old boy and touch his genital area, over his swimsuit, according to the affidavit.

The man was held by park security until police arrived. They arrested and booked him into the Utah County Jail for investigation of sexual abuse of a child. He is being held on $10,000 cash-only bail.