(13WHAM) Rochester N.Y.-Jurors in the trial of Megan Merkel and Mark Scerbo heard some recorded phone calls in court on Wednesday.

One call was to 911 and was placed by a backseat passenger in Megan Merkel's car at the time of the crash that killed that Fairport High School Teacher Heather Boyum.

The other call was placed by Mark Scerbo to a female friend of his while he was in jail.. In it he said Merkel was speeding up and he was trying to catch up to her at the time of the incident. Witnesses though disputed that.

Scerbo and Merkel face numerous criminal charges including vehicular manslaughter and DWI.