"It was going to happen...Some of them retaliated after they were attacked...I apologise for their behaviour and I once again urge them to remain non-violent," he told reporters here in response to a query on the arrest of over a dozen AAP workers in Delhi.
AAP workers had yesterday clashed with BJP activists outside the saffron party headquarters in Delhi and Lucknow after Kejriwal's car was damaged in Gujarat in retaliation to protests against his brief "detention" in the state.
Fourteen AAP members were arrested after Delhi Police registered an FIR in connection with the clashes between supporters of the two parties in the national capital that left 28 people injured.
AAP workers had stormed the BJP head office on Ashoka Road in central Delhi protesting against Kejriwal's 'detention' in Radhanpur in North Gujarat where he has gone to "assess" the development claims made by CM Narendra Modi.
Kejriwal during his second day of Gujarat sojourn today, will meet Sikh farmers settled in the state's Kutch district.