Fairfax County police are looking for at least one suspect in connection with an explosion Wednesday morning at a sub shop on Richmond Highway in Lorton.
A man was injured in the blast and is suffering from non-life-threatening burns.
Police say one man was seen running from the scene, but there may be two suspects.
The victim's son spoke with FOX 5 and says the shop was burned down once before in 2010, but at that time, it was an accident -- the result of a gas leak.
Customers and neighbors say the victim is a very friendly person. They can't understand why anyone would want to hurt him.
One man who lives in the area says he thinks the explosion may be gang-related because there are gangs in the neighborhood.
Police say they don't know if the incendiary device detonated inside the shop was thrown in or carried in.
Anyone with information is asked to contact Crime Solvers by phone at 1-866-411-TIPS/8477, e-mail at www.fairfaxcrimesolvers.org or text "TIP187" plus your message to CRIMES/274637 or call Fairfax County Police at 703-691-2131.