SALEM - Search warrants reveal new details about the Blacksburg murder investigation of Virginia Tech student Samanata Shrestha. According to Roanoke County warrants, police found evidence of a recent physical altercation on the suspect, 22-year-old Jessica Ewing. The evidence includes scratches, bruises and bite marks. Police filed the warrant in Roanoke County because that is where Ewing is being held. Ewing is charged in the murder of 21-year-old Samanata Shrestha. Authorities found the victim's body in Blacksburg on February 10th.