Tamil Nadu's anti-corruption bureau on Friday told the Madras High Court that a preliminary inquiry against Chief Minister K. Palaniswami has started.

The DMK had on Thursday filed a petition in the high court alleging corruption in road construction projects and sought a direction to the Directorate of Vigilance and Anti-Corruption (DVAC) to register a case against the Chief Minister. When the matter came up for hearing, the government counsel told the court, the DVAC started a preliminary probe into the complaint on June 22 this year.