Former Maharashtra Home Minister Anil Deshmukh reached the DRDO guest house in Mumbai's Santacruz on Wednesday morning where the CBI is set to quiz him over corruption allegations by Mumbai's ex-police Chief Param Bir Singh.

The agency had issued summons to Deshmukh on Monday to record his statement.

The move came after the agency had made enquiries with two personal assistants of Deshmukh, namely Kundan Shinde and Sanjeev Palande on Sunday.

Waze, an assistant police inspector, is under investigation in the case of an explosive-laden SUV found outside industrialist Mukesh Ambani's residence in south Mumbai.

The CBI is carrying out a preliminary inquiry into allegations against Deshmukh levelled by Singh after he was removed from the coveted post of Mumbai Police commissioner.

The allegations were reportedly corroborated by suspended officer Sachin Vaze in the custody of the National Investigation Agency (NIA), which is probing the SUV case, they said.

The Bombay High Court had last week directed the CBI to conduct a preliminary inquiry into the allegations levelled by Singh against Deshmukh.

In a letter, Singh had said that Deshmukh had asked Vaze to allegedly extort over Rs 100 crore a month from bars and restaurants in Mumbai, the officials said.