Answer:
The 2007 Virginia Tech killings are an example of classic mass murder, but they could also be classified as spree murder.
Step-by-step explanation:
Classic mass murder involves the killing of 4 or more people at a single location in one constant period, and it can be done in a matter of minutes or even days. The perpetrator of the killing can be only one person or a group of persons.
On the other hand, spree murder involves the killing of 2 or more individuals in multiple locations. Even though the perpetrator/s act in different locations, the crime is conceptually only one event because there is almost no pause between the murders.
Virginia Tech killings can be classified as both types of murders.