A 22-year-old Virginia operate stole a Mercedes SUV on gunpoint the era earlier he shot insensitive a Virginia Tech patrol officeholder and after that took his own life, patrol alleged Friday.Virginia State law on Friday identified Ross Truett Ashley, 22, so the operate who killed Virginia Tech law bureaucrat Deriek Crouse and followed by himself in the region of 30 minutes presently.A part-time undergraduate on Radford University, 15 miles southwest of Blacksburg, Ashley had veto connection to otherwise write to with Crouse previously Thursdays shooting, according to a news leave go of from state control.State law investigators are continuing their act to confirm a motive at home the slaughter and to re-create Ashleys travels at home the days and hours leading up to the murder-suicide, law understood.Ashley entered a real estate workplace participating in Radford with a revolver Wednesday and demanded the keys to a pallid 2011 Mercedes SUV, according to law. He drove rotten here the car, which was found the then daylight on the Virginia Tech campus.