(WSB Radio) -- DeKalb County police are using K-9 units and ground patrols to search for two home invasion suspects who are accused of terrorizing a man and his son.

The suspects, described as black males between the ages of 17 and 19, allegedly approached the victim in the driveway of his home on Big Valley Road in Stone Mountain.

After forcing the man inside at gunpoint, one suspect stayed with the man and his 11-year-old son in the kitchen while the second suspect rummaged through the house.

At one point, the boy tried to run for help, but was grabbed by one of the suspects and thrown on the kitchen floor.

Neither victim was hurt and the suspects got away with $450 dollars in cash, a cell phone and a video game system.

A DeKalb officer arrived as the suspects were leaving the house.  They ran in different directions and the officer fired his service revolver at one suspect who made a threatening gesture toward him.

The home invasion occurred around 6pm Wednesday.