Preliminary toxicology reports show that both drivers involved in a quadruple fatal crash early Saturday morning were under the influence of alcohol, Maryland State Police said.
A Chrysler Sebring Sedan with three teens was headed the wrong direction on Route 50 in Anne Arundel County, investigators said. That car slammed head-on into a BMW.
According to police, 19-year-old Brittany Ann Walker was behind the wheel of the Chrysler Sebring Sedan that was going the wrong way. She was a 2010 graduate of Meade High School. Breanna Marie Franco and Zachary Tyler Rose, both 18, were passengers in Walker's car.
The three teens died at the scene of the crash.
The BMW was driven by Terry Wayne Davis, 55, of Severna Park, who died later at a local hospital.
Officials also released 911 tapes on Monday. In those tapes, other concerned drivers call 911 to report a car driving the wrong way on the highway.