Forensic scientist, former investigator testify at Vaughn trial

September 8, 2012 7:06:38 AM PDT
A state police forensic scientist took the stand Friday in the trial of a Will County man accused of killing his wife and three children.

Kelly Krajnik testified about blood evidence Friday in the trial of Christopher Vaughn of Oswego. The state is trying to prove that Vaughn's wife could not have shot the children and herself.

The defense has argued she did.

A former state police investigator also testified about evidence taken from Vaughn's Ford Expedition. Patrick Collins was also the lead investigator in the Kathleen Savio case.