By saying that he was kept confined to his home without any prior notice, Chandrababu Naidu seems to be trying to be funny. What is preventive custody, must be known to CBN as it is a basic sense for someone who is a long-standing legislator and is a three-time chief minister. When there are fears of large-scale violence or a law and order problem, this preventive custody is employed in order to have control over the situation.
When he planned his 'Chalo Atmakur' rally in Palnadu region, he was under preventive custody. As the YSRCP too had planned a counter-rally, this was done as a preventive measure. CBN claimed that no notices were issued for this. It looks like he forgot that notices are not needed for house arrest. While he was neither arrested nor taken into custody. He was just prevented from going outside of his house for a while.
After the situation gets under control, he can go anywhere he would like to. As an ex-Chief Minister, he should have done it when needed. By such baseless issues, he is trying to gain political mileage even after knowing that there isn't anything illegal in it. His activities post the poll results suggests that he is out of his mind without any clarity in his thought process.