If you think that the worst hazards faced by today's letter carriers are hail, sleet and biting dogs, think again.

A mailman tells Youngstown police that he believes someone shot out the window of his mail truck while he was making his rounds on the south side.

The letter carrier was out of the truck delivering mail in the neighborhood Wednesday afternoon.  When he returned to the Dodge Caravan at Hudson and Ferndale Avenues, he found that the passenger side window had been shattered.

The postal employee tells police that he believes the hole was made by a bullet. However the system that the city uses to detect the sound of gunfire known as "Shot Spotter," did not go off.

 Experts from the police crime lab have been called in to determine what caused the window to break.