Ghaziabad, Feb. 13 -- A day after videos of a violent clash between two groups of lawyers outside a government building in Ghaziabad went viral on social media, police said on Wednesday they have received complaints from both parties and launched an investigation.

Officials said the altercation broke out between two sets of lawyers, both vying to represent a truck driver whose vehicle had been seized during an enforcement drive.

Several videos of the incident surfaced online on Tuesday, one of which showed a woman lawyer, her face bloodied, grabbing a man by the collar outside the sales-tax office in Arthala.

Another brief six-second clip showed the same woman being assaulted by the man.

However, a longer video, around two minutes and...