Pradeep Sharma sent in his resignation to the DGP a fortnight ago, and is awaiting his relieving orders from the Maharashtra government.
'Encounter specialist' Pradeep Sharma, who heads the Anti-Extortion Cell of Thane police at present, was not available for comments.
The identity and group affiliation of the slain ultra were being ascertained.
26-year-old Rohit Saandu, a notorious criminal of western UP, was killed in an encounter supervised by Prashant Kumar, Addl. DGP (Meerut Zone).
The gunbattle broke out in a forest near Gumiyapal village, located around 400 km from Raipur, when a District Reserve Guard team was out on an anti-Naxal operation.
According to occupants of other flats in the building, no one has ever lived in the flat ever since the encounter 11 years ago.
'We will definitely watch the movie because everyone was convinced that the encounter was fake,' a resident of the apartment in which the encounter was carried out said.
The two slain Maoists have been identified as 21-year-old Ashok alias Mangesh (a native of Rajnandgaon, Chhattisgarh) and 19-year-old woman cadre Nande (a native of Bastar, Chhattisgarh).
The slain Maoists identified as Mangesh and Nande, both carrying rewards of Rs 8 lakh each declared by MP and Chhattisgarh government were gunned down by the Hawk Force.
The militant has been identified as Hilal Bhat from Armulla area of Pulwama district of south Kashmir, the official said.
Security forces launched a cordon and search operation in Bugam area of Budgam district in central Kashmir Sunday morning following specific inputs about the presence of militants there.
The gun-battle took place around 11 am close to a culvert near Keshkutul village when a team of the CRPF's 199th battalion was out on an area domination operation on motorcycles
Zubair and Lomas were carrying a cash reward of Rs 50,000 and Rs 25,000, respectively, on their heads, the SP said.
On a credible input, a cordon and search operation was launched by security forces in Kralpora Checkpora area of central Kashmir's Budgam.
A police officer said body of a local militant, Adil Das, was recovered from the orchards in Bijbehara area of Anantnag in south Kashmir in the morning.