The arrest warrant was issued for allegedly making uncharitable and inflammatory remarks against Biharis in party mouthpiece 'Saamana'.
"The government has faced the consequences of arresting Balasaheb in 1969. They shouldn"t dare to repeat the mistake again," Thackeray's son and Sena executive president Uddhav Thackeray said.
"We have not received the warrant. We have learnt of the development through media," Sena spokesperson Neelam Gorhe said.
Sub-divisional Judicial Magistrate (Bhojpur) Rakesh Pati Tiwari ordered issuance of the warrant after Thackeray failed to appear before him on Jul 7.
The complaint was filed by advocate Rajesh Kumar Singh in the court in 2008 accusing Thackeray of making comments against Biharis in 'Saamana'.