The driver of a car that slammed into a driver who stopped to help two teenagers involved in a crash, killing all three, was arrested Friday.

Christopher Masferrer, 30, faces charges on three counts of vehicular homicide, three counts of DUI manslaughter, one count of DUI involving serious bodily injury and one count of DUI causing property damage.

Police said Masferrer was driving the car that slammed into Eduardo Hernandez after he pulled over to help Anapaula Saldana and Caroline Agreda, both 17, earlier this month.

According to the arrest affidavit, Masferrer told police he had eight beers and a shot of liquor at a bar prior to the crash. Police said his blood-alcohol level was 0.193 and he was driving 71 mph in a 40 mph zone.