Three witnesses who were on the Monon High Bridge trail the day Libby and Abby were killed, including one who said she was best friends with Libby's older sister, testified Tuesday that a man they saw on the trail is "Bridge Guy" — the primary suspect depicted in a grainy photo police later shared to aid their investigation.

Witnesses have started to take the stand in a high-profile murder trial that has engulfed a small town in Indiana for years.

An Indiana jury was shown a longer version of the infamous video taken from the phone of one of the slain teenagers in the Delphi murders case. The trial of Richard Allen, 52, entered its fourth day of testimony on Tuesday and included the previously unseen video.