Friends and family of a couple shot to death last weekend in their home gathered for their funeral Saturday amid tight security at the chapel of a Christian college.

Michael and Cathryn Borden were killed by their 14-year-old daughter's boyfriend David Ludwig, police said, following a heated, hour-long discussion early Sunday morning about the relationship.

The funeral at Lancaster Bible College came one day after attorneys for Ludwig, 18, filed court papers saying surveillance videos from various stores will "serve to negate" charges he kidnapped the Bordens' daughter Kara after her parents were killed.

Police caught up to Ludwig and Kara after a high-speed chase Monday ended with him crashing his parents' car into a tree in Belleville, Ind. The two were flown back to Pennsylvania the next day.

On Saturday, white ribbons were affixed to mailboxes on the Warwick Township street where the Bordens lived in a show of support for the family and neighborhood, said resident Bill Quinn.

Quinn, the Bordens' next-door neighbor, was preparing to attend the funeral Saturday and said the scope of the tragedy was "still tough to grasp."

"You probably realize more and more the horror of it as days go on," Quinn said. "Whatever I feel, the family's going through more hell than I'll ever go through."

Three miles away, on the other side of Lititz, there was no answer at the Ludwig family home.

Ludwig is jailed without bail, awaiting a preliminary hearing, and police and prosecutors say they consider Kara to be a crime victim, not a suspect.

The Bordens, both 50-year-old natives of Hannibal, Mo., had four other children — two adult sons who lived in Maryland and Illinois, and another son and daughter living at home. Cathy Borden was a teacher and homemaker whose surviving family includes her twin sister. Mike Borden was vice president of Cadmus Communications Corp.'s Science Press Division in Ephrata.

Both were active in their church, Monterey Chapel in Leola, and homeschooled their children.

Burial was to be at a Mennonite cemetery near their home.

Investigators say they recovered dozens of guns from the home Ludwig shared with his parents in Lititz, as well as a movie from his laptop computer showing him and another man discussing plans to shoot and kill the residents of an unidentified home.