Naidu sat on a fast at around 8 am and will continue till 8 pm.
His son was also put under preventive detention at their residence, following an altercation with the police.
Meanwhile, party leaders and workers who were on their way to Naidu's residence were stopped by police and taken into preventive custody. Further, section 144 was imposed in Narasaraopeta, Sattenapalle, Palnadu and Gurajala.
Andhra Pradesh police have put several TDP leaders under house arrest in view of party's call for 'Chalo Atmakur' rally following political violence allegations made by YSRCP. Police said that TDP did not receive any permission to take out 'Chalo Atmakur' rally.
Meanwhile, TDP has accused the YSR Congress Party of indulging into political violence after coming to power in May. It has alleged that the cadres of the YSRCP have killed as many as eight of its party workers and have attacked many more.