Two people lost their lives during a clash between Dagombas and Komkombas, in a dispute over a mobile phone, at Agbogbloshie, in Accra, yesterday.
Others, who sustained machete and gunshot wounds during the violence, are receiving treatment at the hospital.
A pharmacy shop was vandalised, and an office and motorbikes were burnt during the conflict.
When The Ghanaian Times got to the scene, there was heavy security from the Accra Regional Police Command and the military.
The usual brisk business at the market was brought to a halt as traders were seen parking their wares and fleeing.
The police fired tear gas and sprayed the crowds with water cannons, to prevent large number of people, who were trooping to the scene.
The Public Relations Officer of the Accra Regional Police Command, Assistant Superintendent of Police (ASP) Effia Tenge, confirmed the death to journalists, and said the bodies have been deposited at the Police Hospital Mortuary for autopsy.
She said the situation was currently under control, but indicated that the security would still be at Agbogbloshie to ensure law and order.
The Police PRO said information gathered indicated that an alleged theft case, brought about the violence, but no arrest had been made so far.
An anonymous eyewitness alleged that a Dagomba youth stole a phone from a Komkomba woman on Tuesday and was assaulted by the Komkombas.
The following day the youth from Dagomba reported the incident to a group he belongs to and they also attacked a Komkomba man at a pharmacy shop, and vandalised property there.
The eyewitness said there was a reprisal from the Komkombas, which resulted in a clash between the two groups.
He said the combatants were armed with guns and cutlasses.
The eyewitness said while the leadership of the two groups were said to have gone to the regional command to see how best to resolve the dispute, the violence broke.
By Anita Nyarko-Yirenkyi