MONTOURSVILLE, Pa. -- A Pennsylvania couple was robbed at gunpoint and bound with duct tape, and their house was set ablaze. Now their adult daughter is missing, too.

Brian Vroman and Michael Houseweart, of Canton, are accused of breaking into Gary and Linda Inch's home near Montoursville early Wednesday. The two were arraigned Thursday morning.

Police in Lycoming County say they are concerned about the couple's 33-year-old daughter, Michelle, who had a relationship with the 27-year-old Houseweart and hasn't been seen since Tuesday. Her car is missing, and calls to her cellphone aren't going through.

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Police say Linda Inch freed herself and ran to neighbors for help. Her husband was found unresponsive inside by firefighters. Both were treated for smoke inhalation.

No attorney information was listed in online court documents.