Pennsylvania ? An 18-year-old man accused of kidnapping his girlfriend and killing her parents was videotaped discussing plans to conduct an armed raid on another family’s home and kill people inside, according to court documents released Friday.

David Ludwig’s attorneys, meanwhile, said that videotape from surveillance cameras will show that the suspect did not kidnap the 14-year-old daughter of Michael and Cathryn Borden, who were gunned down in their home Sunday.

An 18-minute video recovered from a laptop computer in Ludwig’s house shows him and another teenager taking guns from his house to another home and discussing using the weapons to “shoot and kill family members inside of the residence,” court documents said.

It is not known whose house was targeted, but it was not the Bordens’, investigators said. The court documents said Ludwig and Lohr abandoned the plan because there was too much traffic nearby.

Authorities described the video in an affidavit for a search warrant issued Thursday for the seizure of computer and video equipment.

Ludwig is being held without bail on murder and kidnapping charges after being flown back to Pennsylvania on Tuesday from Indiana, where he was captured by police. His girlfriend, 14-year-old Kara Borden, was with him when he was caught.