(AP) -- Updated: 3:45 p.m. on Dec. 8:
A law enforcement official says the gunman who fled after killing a police officer on campus is believed to be dead.
The law enforcement official had knowledge of the case and spoke on condition of anonymity.
After the officer was shot Thursday, authorities found a second body in a campus parking lot. It was not immediately clear if that second body was that of the gunman.
The shooting triggered a lockdown on the sprawling campus that in 2007 was the scene of the deadliest mass shooting in U.S. history. School officials said earlier in the day that the officer was shot during a routine traffic stop.
The officer has not yet been identified.
Updated: 2:45 p.m. on Dec. 8:
Police are searching for a gunman after two people were killed on the campus of Virginia Tech -- the same school where 33 people were killed in a mass shooting in 2007.
School officials say a police officer pulled someone over for a traffic stop and was shot and killed. The shooter ran toward a nearby parking lot, where a second person has been found dead.
Students and faculty were told to stay inside university buildings as police looked for the suspect.
TV footage shows heavily armed officers walking around campus. Caravans of emergency vehicles with lights flashing patrolled nearby.
A sophomore at the school, Corey Smith, says it's "crazy" that there would be another shooting on the campus, after what happened four years ago. He says he stayed inside after seeing the alerts from the school.
Junior Harry White says he didn't panic when he received the text message -- thinking instead about a false alarm about a possible gunman that caused the campus to be locked down in August.
Updated: 1:45 p.m. on Dec. 8:
Virginia Tech officials say a police officer and another person have been shot and killed on the school's campus.
The suspect remains on the loose.
A news release from the school says the police officer had pulled someone over in what was a routine traffic stop Thursday. The officer was shot and killed during the traffic stop.
Witnesses told police the shooter ran toward a parking lot on campus. A second person was found dead in that parking lot.
Virginia State Police will be taking over the investigation, according to the news release.
Updated: 12:40 p.m. on Dec. 8
The independent newspaper that covers Virginia Tech and Blacksburg, Collegiate Times, is reporting via Twitter that a suspect is being aprehended on the steps of the performing arts building.
Original Story
Virginia Tech says a police officer has been shot, and a possible second victim has been reported at a parking lot near the campus.
Authorities are seeking a suspect.
A campus-wide alert tells students and faculty to stay inside and lock doors.
The shooting comes the same day as Virginia Tech is appealing a $55,000 fine by the Education Department in connection with the university's response to a 2007 rampage that left 33 people dead.
The suspect is described as a white male wearing gray sweat pants, gray hat with neon green brim, maroon hoodie and backpack.
A message left with the university wasn't immediately returned. Campus police referred all questions to the university.
A student gunman killed 32 students and faculty and then shot himself on the campus in 2007.
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