"It is unlikely that all traces of evidence could be removed but it could be tampered with," one expert said.
The suspect is believed to have fled after a customer grabbed his gun.
The gymnast says she spoke up after team doctor Larry Nassar 'went overboard'
The school initially suspended the engineering fraternity after the university got hold of a video from a private Facebook group showing brothers reciting a racist and anti-Semitic oath.
Mack is set to appear for bail hearing in a case connected to alleged cult leader Keith Raniere.