By David Madden

COLWYN, Pa. (CBS) — A suspended Colwyn police officer will be tried on charges of assault and official oppression after a teenager was hit with a shot from a Taser gun while in a borough jail cell last month.

Trevor Parham, 40, is accused of using the weapon last month on a teenager who was not only locked up but also shackled, when he became disruptive.

A text message between Parham and another officer seems to bear that story out.  In the message, Parham is joking about the incident (see related story).

The charges are misdemeanors.  Parham remains free on unsecured bond.

Meanwhile, Delaware County investigators continue to look into why the teen was in the cell in the first place.  There is no paperwork indicating the youth was even locked up, or that he resisted arrest.  Nor is there any official record of the Taser’s use.