Congress LS candidate Kanhaiya Kumar assaulted during election campaign in Delhi

Videos of the assault, which took place in East Delhi's New Usmanpur area on Friday, were released online and have now gone viral.

Two of the alleged attackers have also released videos boasting that they had thrashed the Congress leader.

According to them, Kumar raised slogans on breaking up the country and had spoken against the Indian Army. 

In a complaint, Chhaya Gaurav Sharma, the AAP councillor from Brahmapuri, said she and Kumar were leaving the party's office in Kartar Nagar when seven to eight people garlanded Kumar, threw ink on him and then thrashed him.

She said three to four women were also injured, and a woman journalist fell into a drain.

Sharma alleged the attackers also dragged her to a corner using her stole and threatened to kill her and her husband.

Delhi Police said they are verifying the videos and have started a probe based on Sharma's complaint.

In videos released after the incident, two of the alleged attackers, at least one of whom can be seen holding a garland in the footage of the assault, showed their reddened hands and justified their acts as Kanhaiya had raised slogans saying the country would be broken into parts.

This was a reference to the alleged slogans raised at the Jawaharlal Nehru University (JNU) in 2016, when Kumar was the JNU Students' Union president.