At least two persons were injured and several vehicles damaged when two groups hurled stones and assaulted one another over a petty issue during a marriage function in Virar area of the district, according to police.
Nearly half a dozen persons have been arrested in connection with the incident.
During a marriage function of a community at a farm house in Virar's Mandvi village, a bus carrying people arrived at the spot and was parked in a narrow road late last night.
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Members from both sides then started assaulting each other and pelted stones at one another.
Following rumours of a communal flare-up, DSP Vasai Srinivas Ghatge rushed to the spot with police force.
Local MLA Vivek Pandit also rushed there and helped in resolving the dispute between the two sides following which the marriage ceremony was held.
Police have registered case of rioting and arrested half a dozen persons from both sides.