A police officer has reportedly been shot on the Virginia Tech campus, where police just apprehended an apparent suspect—though another suspect, a "white male, gray sweat pants, gray hat w/neon green brim, maroon hoodie and backpack," may still be at large. There's also a "potential second victim" in the Cage parking lot; Roanoke Times reporter Lerone Graham is Tweeting live from the campus, as is student paper Collegiate Times.

Update 1:53 p.m. The university has confirmed that two people have been killed. The "suspect" who surrendered outside the Performing Arts building was not arrested, and more shots have been reported on campus.

Update 2:23 p.m. The police officer was apparently shot in a "routine traffic stop," after which the suspect ran to the parking lot where the second victim was found. A SWAT team has been called in; the suspect is still apparently on the loose. Here's the university's full statement:

Shortly after 12 p.m. today, a Virginia Tech Police officer stopped a vehicle on campus during a routine traffic stop in the Coliseum parking lot near McComas Hall

During the traffic stop. the officer was shot and killed. There were witnesses to this shooting.

Witnesses reported to police the shooter fled on foot heading toward the Cage, a parking lot near Duck Pond Drive. At that parking lot, a second person was found. That person is also deceased.

Several law enforcement agencies have responded to assist. Virginia State police has been requested to take lead in the investigation

Status of the shooter is unknown. The campus community should continue to shelter in place and visitors should not come to campus.

Update 3:14 p.m. The shooter's status is still "unknown," but @VTNews reports that there aren't any "new substantiated reports of suspicious or ciminial activity."

Update 4:23 p.m. Police apparently now believe that the second victim, whose body was found in a parking lot, was the person who shot the police officer.

[WaPo, VT.edu, image via @LeroneNRV]