Moreover, shortly after announcing the charges against David Desper, Chester County District Attorney Tom Hogan said the following during the news conference at the West Goshen police station. Roberson's vehicle veered off the road and was later found in a ditch.
Desper turned himself in early Sunday morning, and is being held at the Chester County Prison without bail, charged with first-degree murder and related offenses.
David Desper has turned himself in in relation to the crime and has been placed under arrest for 1st-degree murder, 3rd-degree murder, and possession of an instrument of a crime.
Roberson recently graduated high school and had been shopping for new college clothes with her mother and grandmother before she was killed, family members said.
'So he pulled out a gun and shot Bianca in the head, killing her instantly, ' he said, as reported by ABC which attended the press conference. On the other hand, Desper, who was driving his red pickup truck, quickly fled the scene.
"This was a senseless and brutal act of violence", Hogan said.
Police released surveillance video of Desper's pickup truck Saturday. Police found the gun in Desper's bedroom.
The teen and another driver started to merge into the same lane, "jostling for the position" on Route 100 in West Goshen Township, more than 30 miles from Philadelphia, said Michael Noone, first assistant district attorney for the Chester County District Attorney's Office. "To that man who fired that shot, turn yourself in now". "He took a attractive young lady of 18 years of age in the prime of her life getting ready to go off to college, and for reasons that are incomprehensible to me, the family is now planning for her funeral instead of a going-away party for college".
Her death is the second tragedy for the family, after Roberson's brother died four years ago.
Anyone with information is asked to call West Goshen police.
She had hoped to work for the Federal Bureau of Investigation, her father said.