Virginia Tech has advised everyone on campus to "seek shelter or stay where you are" because of reports about shots being fired there.
It adds that:
"[A] suspect described as white male, gray sweat pants, gray hat w/neon green brim, maroon hoodie and backback" was seen "on foot towards McComas" — the university's athletics facility.
The university was the site of mass shooting in April 2007, during which a student killed 32 other people before taking his own life.
Update at 1:16 p.m. ET. Officer And Possibly A Second Person Shot:
The university's website now says:
"Suspect remains at large. A police officer has been shot. A potential second victim is reported at the Cage lot. Stay indoors. Secure in place."
Update at 1:15 p.m. ET. Officer Reportedly Shot:
WDBJ-TV in Roanoke says its reporter Karen Kiley says "a police officer is the one who has been shot."