CHATTANOOGA (WRCB)-- While investigators were working a homicide on Pawnee Trail, separate reports of shots fired were received at 4800 Tomahawk Trail and 900 Woodvale Avenue.

On the Tomahawk Trail call, two suspects were arrested and have been identified as 24-year-old Darrell Armstrong and 18-year-old Dominique Brown.

In addition to Armstrong and Brown, police also located two assault rifles in a car. A third suspect fled on foot and has not been located.

The investigation into Richardson's shooting as well as the two shots fired calls are still under investigation and are possibly related, although direct ties between the three have not been identified. The motive for the shooting is also still under investigation.