The officer said that four more people were detained and questioned in connection with the case but the main shooter is still on the run.
The National Investigative Agency (NIA) on Wednesday conducted raids at 51 locations in six states in connection with the crackdown on a terror-gangster network operating in India and Canada, officials said.
The motive behind the killing was yet to be ascertained and various angles were being investigated, including the alleged link to the Lawrence Bishnoi gang, according to police.
Mumbai Police arrested a budding songwriter for allegedly sending threat messages to Bollywood actor Salman Khan and demanding Rs 5 crore from him in the name of gangster Lawrence Bishnoi. Sohail Pasha, held from Raichur in Karnataka, wanted a song written by him to become famous and used this ploy for the purpose, police claimed.
The deceased Anuj Thapan, 23, hanged himself inside the toilet of the lock-up using a bedsheet.
Different angles behind the killing were being probed, but the police will talk about it later, Fadnavis, who holds charge of the state home department, told reporters in Gondia district.
Top Canadian officials have accused Union Home Minister Amit Shah of leading a campaign targeting Sikh separatists in Canada, escalating tensions between the two nations.
An aide of the sixth shooter arrested in the Sidhu Moosewala murder case had conducted reconnaissance in Mumbai to draw up a strategy to kill actor Salman Khan at the behest of gangster Lawrence Bishnoi, Punjab Police chief Gaurav Yadav said on Sunday.
Two persons fired four rounds outside Bandra's Galaxy Apartments, where the actor resides, around 5 am and fled from the spot, the police official said.
He clarified that Siddique was provided a non-categorised security and was allotted three police constables.
The National Investigation Agency has posted a list of gangsters and terrorists based in Canada.
A few days later, three members of the Bishnoi gang delivered a letter threatening Bollywood actor Salman Khan and his father Salim Khan, police had said.
Bollywood actor Salman Khan has allegedly received a death threat again along with a demand of Rs 2 crore following which the Mumbai police have registered a first information report (FIR) against an unidentified person, an official on Wednesday.
'The attack on Saif Ali Khan yet again raises questions on Mumbai Police & the Home Minister'
The lawyer told the police that he lost his phone a week before and had filed a police complaint, the official said.
Police scoured places of worship in Madhya Pradesh's Ujjain and Khandwa in their hunt for the third shooter wanted for Nationalist Congress Party leader Baba Siddique's killing.
Siddhesh Kamble alias Mahakal, an alleged member of the Lawrence Bishnoi gang, has told investigators that Bollywood filmmaker Karan Johar was on the list of persons whom the gang planned to target for extortion, a police official said.
The Mumbai police on Monday recorded the statement of Bollywood actor Salman Khan's father Salim Khan, a day after a letter threatened that the father-son duo will meet the fate of Punjabi singer Sidhu Moosewala.
The accused was nabbed by a team of Bandra police station and is being brought to Mumbai, an official said.
Bollywood actor Shah Rukh Khan has received a death threat and a demand for Rs 50 lakh, Mumbai police said on Thursday, adding an extortion case has been filed in this connection.
According to police, Lakhwinder Singh was nabbed from Sarai Kale Khan on September 24, and Gurjeet was apprehended near ISBT Kashmiri Gate on October 13.
The Mumbai police probing the Baba Siddique murder case have found that the five newly-arrested accused had demanded Rs 50 lakh for the killing, but backed out later due to disagreement over payment and also considering the Nationalist Congress Party leader's clout, officials said.
The juvenile was also wanted in the murder of builder Sanjay Biyani on April 5 in Maharashtra's Nanded and the killing of gangster Rana Kandowalia outside a private hospital in Amritsar on August 4 last year,
Twenty-three-year-old Singh's family said they disowned him 11 years ago and have called for exemplary punishment for his actions.
The police have arrested Siddhesh Hiraman Kamble, alias Mahakal, in connection with the killing of popular singer and Congress leader Sidhu Moosewala in Punjab last month, an official said on Wednesday.
A 9 mm pistol along with 10 live cartridges, a 30 mm pistol with nine live cartridges, three police uniforms of Punjab Police and two mobile handsets along with a dongle and SIM card have been seized from their possession, police said.
He had allegedly hanged himself with a bed sheet in the toilet of the lock-up, as per the police.
The Canadian government on Tuesday named Satinder Singh Brar, nicknamed Goldy Brar, the alleged mastermind in the killing of famous singer-politician Sidhu Moosewala, among the country's top 25 wanted criminals.
The Delhi Police said that it suspected that the murder of Moosewala has link with the last year's killing of Vikramjit alias Vicky Middukhera.
"Five grenades and two automatic pistols have been recovered from his possession. He is being brought to the national capital and his police custody remand will be sought," police said.
As Canadian Prime Minister Justin Trudeau testified before a Commission of Inquiry, the Ministry of External Affairs (MEA) on Thursday said what it has heard only 'confirms' New Delhi's consistent stand that Canada has 'presented us no evidence' in support of the serious allegations Ottawa chose to level against India and Indian diplomats.
Both of them were from regular families and had no criminal history, the police said on Sunday.
The police suspect a virtual private network was used for uploading the Facebook post, allegedly by Anmol Bishnoi, the brother of jailed gangster Lawrence Bishnoi on Sunday, he said.
The three have been identified as Parveen Wadhwa alias Prince, Irfan alias Chenu and Jassa Singh.
Tinu escaped from the custody of the Crime Investigation Agency unit of the Mansa Police on Saturday night when he was brought on a production warrant from Goindwal Sahib jail in Tarn Taran district in another case.
Trudeau claimed the Indian diplomats were collecting information on Canadians who are in disagreement with the Narendra Modi government and passing it to the highest levels within the Indian government and criminal organisations like the Lawrence Bishnoi gang.
'Canada doesn't want to de-escalate and neither does India. There is war when one party wants it, but peace is won by both parties.'
''Unfortunately, some people claiming to be close to our family and pretending to be the spokesperson have been making loose statements to the media saying it's all a publicity stunt and the family remains unaffected which is not true and these views should not be taken seriously.'
The police have initiated the process to bring the student back to India as he has been identified as the sender of the email, the official said on Tuesday.
The Mumbai police have detained a 16-year-old boy from neighbouring Thane district for calling the police control room and allegedly threatening to kill Bollywood superstar Salman Khan, an official said on Tuesday.