According to the police, both the parties held rallies to celebrate Independence Day and came face to face near Shah Faisal Colony No 2 Roundabout.
The rallies' participants chanted slogans against each other and, in the meantime, some of them scuffled with each other, the police said, adding that a contingent of police was already on alert in the area to avert any untoward incident.
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Sami Shahzad, a resident of the locality, said that he saw workers attacking each other - punching, kicking and beating each other with the sticks of flags that they were holding. "As the crescendo of the slogans increased, some of the workers started fighting."
Shahzad said that it was not the first time such an incident happened in the area. "Due to the presence of almost all MQM offshoots - MQM-Pakistan, MQM-London, Muhajir Qaumi Movement - Haqiqi and PSP - the area is prone to clashes, since each of them consider the other a traitor."
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