A trailer laden with cattle on Friday rammed into hawkers in Awka, capital of Anambra state, killing about eight persons.
Those affected by the incident are many children hawking at the popular Kwata junction flyover.
Four persons who were riding in two cars sustained various degrees of injuries in the incident that involved several vehicles in the traffic.
Youth in the area in anger set the truck and the cattle on fire before security operatives could arrive.
Later, military personnel were mobilized to disperse the youths, who stopped attempts to tow the truck off the road to make way for free flow of traffic.
The shooting caused residents and even motorists to abandon their vehicles on the road and scampered for safety.
Public Relations Officer of the Anambra state police command, Ikenga Tochukwu, confirmed the incident but could not authenticate the casualty figures.