Mumbai Police Commissioner Param Bir Singh met Maharashtra Chief Minister Uddhav Thackeray against the backdrop of the arrest of city police officer Sachin Waze by the NIA over its probe into the recovery of an explosives-laden SUV near industrialist Mukesh Ambani's house.

Singh met Thackeray at the latter's official residence 'Varsha' here on Tuesday night, sources said. Waze, arrested by the National Investigation Agency (NIA) on March 13, was attached to the Crime Intelligence Unit (CIU) of city police's crime branch till recently.