24 July 2012 Last updated at 00:10 ET

Main suspect in India Assam girl assault held

The police say Amarjyoti Kalita led the assault on the girl

The police in India say they have arrested the main suspect in the assault of a teenage girl in northeastern Assam state.

Amarjyoti Kalita - an actor who played a policeman in a recent Assamese television serial - was held in the northern city of Varanasi on Monday.

There was outrage after footage emerged showing a mob of men attacking the girl in the city of Guwahati.

So far, 12 people have been arrested in connection with the incident.

The editor of a television channel, which first aired the video of the assault resigned over the broadcast last week.

Gauravjyoti Neog, the journalist who filmed the girl's ordeal, has also resigned to facilitate a "fair investigation" after facing allegations of voyeurism.

The incident has so angered residents of Guwahati that some have put up a billboard in a busy city area, demanding tough action against those involved.

Assam has a high rate of crime against women - 36.9 per 100,000 a year against the national average of 18.9.