cellphone security


ANNAPOLIS, Md. (AP) - Maryland Gov. Martin O'Malley plans Friday to unveil a new cellphone security system at the Baltimore City Detention Center.

The technology automatically blocks calls from all cellphones inside the building, except a small number of phones assigned to employees. It also allows any phone to call 911.

It's a misdemeanor to smuggle a cellphone into a Maryland correctional facility. In 2007, an inmate used a cellphone to arrange the killing of a Baltimore County witness.