"I didn't use any provocative statement at yesterday's rally," Hardik Patel told NDTV.
Prime Minister Narendra Modi has called for peace in Gujarat, and said "violence does not benefit anybody."
Mr Patel's takeover of Ahmedabad was near complete yesterday. He addressed lakhs of Patels, a traditionally affluent and powerful caste, at a huge public ground in the heart of the city, and then announced a hunger strike. At 9 pm, in what is being seen as a huge misstep, he was led away by the police, which also used a lathi-charge to break up the large crowd. Cases of arson followed quickly in some neighbourhoods dominated by Patels. On a WhatsApp message last night, Mr Patel appealed for calm.

Arson was reported from several areas of Ahmedabad on Tuesday night after news of Hardik Patel's detention spread (Reuters photo)
Denying that his supporters are inflaming tension, Mr Patel said, "Despite our peaceful gathering, there was a police crackdown."
Chief Minister Anandiben has already said that the Patels cannot be added to the list of more than 100 castes that currently benefit from quotas in the state. Gujarat, she has underlined, has already hit the cap of 50% reservations mandated by the Supreme Court.
The Patels, once wealthy farmers and traders, say that because they are largely self-employed, they are being excluded from the growth curve forged by the famous Gujarat model of development. Their youth needs medical and engineering degrees, they argue, and admission in colleges has become impossible because other castes in the "reserved" category get preference.