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PHILADELPHIA (CBS) — Three people are dead, including two Mummers, and two others are seriously hurt after a horrific crash, early Wednesday morning. It happened just before 2 a.m. near the intersection of 7th Street and Packer Avenue.

Two of the victims killed in the crash were members of the South Philadelphia String Band, which is a part of the Mummers community.

Police believe 29-year-old Keith Campbell, who was driving a white Audi, crossed the double yellow lines and hit the dark-colored Acura head on. When authorities found Campbell, he had 15 to 20 stab wounds and a knife was on the floor of his driver seat.

Police are suspicious of whether Campbell stabbed himself before or as he was heading toward the Acura.

Eyewitnesses tell police that Campbell was traveling at a high rate of speed when he crossed over the median and hit the SUV.

Four people were in the Acura at the time of the crash. Three of them, two men and a woman, were pronounced dead at the scene. They have been identified as 36-year-old Joseph Ferry, 31-year-old Dennis Palandro, and 35-year-old Kelly Wiseley.

Ferry and Wiseley got engaged over Christmas.

Palandro’s wife was also taken to the hospital in critical condition. She is expected to survive.

The South Philadelphia String Band is asking for privacy at this time.

Campbell is in critical condition and it’s unclear if he will survive. He has been charged in the crash.