DELPHI, Ind. — The prosecution’s case against Delphi murders defendant Richard Allen moved along briskly Wednesday and Thursday, with jurors hearing testimony from a forensic pathologist, top case investigators and eyewitnesses.

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.