A forensics expert who admitted Monday that his credentials don’t line up with those on his resume returns to the stand.

During an abbreviated day Friday, the jury heard from two forensic scientists at the Massachusetts State Police crime lab about key physical evidence in the case. The prosecution will call its next witness when the trial resumes at 9 a.m. Monday morning.

A timeline of events presented by a new witness suggests Karen Read could have struck John O'Keefe with her Lexus SUV.

The Karen Read case is back in a Massachusetts courtroom on Monday as the trial enters a fifth week with an 18th day of witness testimony. A forensic analyst for the prosecution is going over the movements of Read's Lexus SUV on the night in question.

The Massachusetts judge presiding over Karen Read's second trial in the death of Boston Police Officer John O'Keefe has barred references to the botched Sandra Birchmore investigation.

DEDHAM, Mass. — Karen Read was not pleased leaving court on the fifth week of testimony in her retrial. She accused prosecutors of springing new information about the case last minute. Enter Shanon Burgess, a digital forensic expert who analyzed data from Read’s Lexus and John O’Keefe’s phone.

Prosecutor Adam Lally called Andre Porto and Ash Vallier, analysts at the State Police crime lab, to the stand. Here's how the day unfolded.

According to our Boston affiliate WCVB, the tail light DNA came from three separate people, including at least one male. The sample was a “strong match” for Boston police officer, John O’Keefe. Bradford explained the hair sample found in the back of the SUV did not give enough DNA to identify it.

Karen Read‘s second trial in connection with the death of her boyfriend, Boston police officer John O’Keefe, continues on Monday in Dedham’s Norfolk Superior Court before Judge Beverly Cannone. During an abbreviated day Friday,

Testimony is continuing in the murder trial of Karen Read, who is accused of backing her SUV into her Boston police officer boyfriend, John O’Keefe, and leaving him for dead. On Monday, Prosecutor Adam Lally called two DNA analysts before calling a digital forensics examiner to the stand.