McDonald An Altoona man with a criminal history of using GPS technology to stalk people was arraigned Wednesday in a separate stalking case, court documents stated. Altoona police charged Matthew J. McDonald, 46, on Wednesday with several crimes, including forgery, stalking and theft, after his ex-girlfriend reported she discovered a tracking device magnetically attached to the underside of her vehicle, according to court documents. The victim told police she briefly dated McDonald in December and January, but after they broke up, McDonald allegedly continued to text her, saying he knew her exact location, police reported. After reading an article about McDonald’s prior convictions, in which he used a Spytec tracking device to harass another woman in 2019, the victim looked under her car and discovered a Spytec tracking device, a criminal complaint stated.