Chief Minister Bhagwant Mann on Monday said his government will request the chief justice of the Punjab and Haryana High Court to get the Sidhu Moosewala murder case probed by a sitting high court judge.

The government will leave no stone unturned to bring the perpetrators of this heinous crime to justice, Mann said in a statement on Monday after Moosewala's father demanded a thorough inquiry into the shooting of his son by the CBI or NIA.

Mann also expressed deep shock over the demise of Moosewala. "Punjab Government shall be requesting the Chief Justice of Punjab and Haryana High Court to get the case inquired into by the sitting judge of the high court," he said.

"The state government shall ensure full cooperation in this enquiry commission including that from any central agency like the NIA," he stated. Mann further said he had already ordered an inquiry at the highest level into aspects of security reduction and fix responsibility.

Seeking justice for his son, Moosewala's father Balkaur Singh demanded that the Punjab government should involve the CBI and the NIA in the inquiry. He also demanded a public apology from the DGP for linking his son's murder to gangwar.

It is learnt that the family of Moosewala was not agreeing to conduct the post-mortem.

In a letter to CM Mann, Singh blamed the AAP government's alleged incompetency for the incident. "Shubhdeep's mother is asking me where her son is and when he will return. What reply should I give?" said Singh in an emotional letter. "I hope that I will get justice," he added.

"This case should be inquired by a sitting judge of the high court. The Punjab government should ensure assistance of the CBI and the NIA in the inquiry," Singh wrote in the letter.

He demanded that the accountability of officers, who reviewed his son's security and made public the order of withdrawal of the security cover, be fixed.

The Punjab police DGP on Sunday had said, "This incident seems to be a case of an inter gang rivalry, adding that the Lawrence Bishnoi gang was behind the murder of Moosewala."

At least three weapons were used and 30 empty cases were recovered from the site.

Moosewala was left with two Punjab Police commandos after the state police withdrew two of four commandos from his security cover. However, Moosewala neither took the remaining two commandos with him nor his bullet-proof vehicle on Sunday.

Shubhdeep Singh Sidhu, known as Sidhu Moosewala, was among the 424 people whose security was withdrawn or curtailed by the Punjab Police on Saturday on a temporary basis.

Delhi Congress stages protest

The Delhi Congress staged a protest near Chief Minister Arvind Kejriwal's residence here on Monday accusing the Aam Aadmi Party of being responsible for Sidhu Moosewala's killing in Punjab a day before. The protesters, including Delhi Congress president Anil Kumar, marched from Sushruta Trauma Centre towards Kejriwal's residence but were stopped by the Delhi Police at a barricade."The AAP government is responsible for the daylight murder of Sidhu Moosewala. Arvind Kejriwal should answer why Moosewala's security cover was withdrawn although his life was under threat and it was known to intelligence agencies in Punjab," Kumar said.