MANCHESTER, Maine — Court documents paint a clearer picture of what may have led to the deaths of an Augusta couple on Christmas Day 2015 in Manchester.

According to the affidavit released Tuesday, 26-year-old Bonnie Royer and 35-year-old Eric Williams were shot to death by David Marble Jr., 29, or Rochester, New York, because he believed the couple had robbed him.

Marble on Tuesday pleaded not guilty to murder charges in connection with the slayings.

According to court documents, Marble is a drug dealer and Williams had worked for him. Hours before the couple were killed, Williams and three others allegedly went to Marble’s apartment and stole drugs and TVs. When Marble returned home, he immediately suspected Williams was responsible, court documents state.

A friend of Marble friend then called Royer and asked her to make a drug run for him, according to court documents.

Royer and Williams both went to Marble’s house, and shortly after they got there, police received a 911 call from Royer, who said she was on Pit Road and had been shot, according to court documents.

Police were able to trace the call and found Royer and Williams shot to death inside their SUV on a dirt road in Manchester.

The affidavit also included text messages from Marble’s phone around the time of the murders that read “It had to be Eric I am with him now we taking a trip.”

A trial is expected sometime next year.

BDN writer Dawn Gagnon contributed to this report.