The most recent incident took place Wednesday, October 28, at the corner of Fairview and Cornelia, when an eighth grader at Hixson Middle School was approached by a man who asked her directions to Elm Avenue, a major north-south thoroughfare in Webster.
The student quickly ran away when she noticed that the suspect, described by police as a white man in his late twenties or early thirties, was naked from the waist down.
On at least two other occasions, the man -- again, trouserless, sought out female students at Avery Elementary -- once at the corner of Margaret and Atalanta, and another time off Providence, near Tuxedo, Webster Groves Police Lt. Andy Miller told the Daily RFT on Thursday.
In all cases, the initial one taking place October 13, Webster police immediately notified the school that the student attended, said Miller.
It is not known if there have been other instances of sexual misbehavior that have gone unreported.
In any case, very early Thursday morning, well before the school day began, principals and other officials in the Webster Groves School District made hundreds of robo-calls to alert parents throughout the district.
Lt. Miller said patrols have been "heavily increased" during the afternoon's post-school hours, the preferred time for man, sans pants, to make his presence known.
"We're hoping to get a license plate," Miller said. "Anyone with any information is asked to call Webster Groves police."
The number: 314-645-3000.