The University of Washington Police department Friday (March 3) arrested a Middleton teenager in connection with the slayings of Madison physician Dr. Beth Potter and her husband Robin Carre.

The accused, identified as 18-year-old Khari Sanford, was arrested and charged for homicide after the Wisconsin doctor and her husband were found “lying in a ditch” at a Madison research and recreation area earlier this week.

The authorities said that Sanford was “known to the family” and committed the crime with precise calculation.

Sanford was a senior at Madison West High School where the couple’s daughter is a student. “We believe that this was not a random act. It was calculated, cold-blooded, and senseless,” said UW Police Chief Kristen Roman in a video statement.

Around 6:30 a.m. on Tuesday, a jogger reported to the police after he spotted a couple “lying in a ditch” near the entrance of the UW Arboretum.

Carre, 57, was found dead at the scene, while Potter, 52, still had some life left before she was rushed to the hospital where she died shortly after arriving.

The couple died due to a “homicidal related trauma,” said the Dane County Medical Examiner’s Office. The office provided no further details.

Though UW police received several reports of people hearing gunshots in the area, the authorities have not yet released any details regarding the motive for the gruesome slayings.

“We will continue to do all that we can to bring justice to Robin and Beth, their family and their loved ones,” Chief Roman said.

“We know that questions about what happened to Beth and Robin and why remain. We pledge to provide as many answers as we can and when we can, as this investigation moves forward,” Roman concluded.

According to the Wisconsin court records, Sanford had recently received a deferred prosecution in Class A Misdemeanor over an auto theft case.

Sanford has been booked into the Dane County Jail and is charged with two counts of party to a crime for first degree intentional homicide.

This representational image shows a man's handcuffed hands. Joe Burbank-Pool/Getty Images