Pannu, the controller of the banned Sikh For Justice (SFJ) and a Khalistani proponent, was designated a terrorist by the Union home ministry under the Unlawful Activities Prevention Act in 2020.
Six bike-borne men hurled country-made bombs at Senthil Kumaran and then attacked him with machetes in Puducherry on March 26, 2023.
A diplomatic firestorm erupted this week with Canadian PM Justin Trudeau saying there were "credible reasons to believe that agents of the government of India were involved" in Nijjar's death.
Both Atif and Faisal were also named in the terror attack case related to the Bhopal-Ujjain passenger train on March 7, 2017, leaving scores of passengers on board injured.
"Time and again, courts have held that 'access to justice', an invaluable human right, is also recognised as a fundamental right," the bench said in its judgment.
The revelation came after NIA grilled a Thrissur native who was arrested from TN last week
They said it was found that CPI(Maoist) Central Committee member Pramod Mishra was leading cadre and overground workers in a bid to revive the left-wing extremist organisation.
Multiple NIA teams carried out searches simultaneously at all these eight locations which are the residential and office premises of the suspects.
The NIA said both the accused are lodged in Kot Bhalwal jail, Jammu, in another case in Poonch district.
An NIA probe had revealed that PFI was utilising the facility for arms training and physical conditioning of its members, besides explosives testing.
Meanwhile, the NIA also conducted searches on the residence of a man, suspected to be linked to PFI, in Karimnagar town in neighbouring Telangana.
“They were staying in Bellandur. The NIA officials did not disclose the details about the case which they were probing.
The NIA investigations show that the HuT was trying to build its organisation and cadre clandestinely by recruiting impressionable Muslim youth.
According to sources, I Mohammed Idris (25) of GM Nagar in South Ukkadam was arrested for his alleged role in the conspiracy in the case.
They alleged that National Investigation Agency officials violated rules of arrest as they failed to serve notices and also demanded them to release him immediately.
Acting on a tip-off, a joint team of NIA, ATS, and East Champran police conducted a raid at Bansghat Gawandara village under Chakia police station late on Tuesday and took Yaqub into custody.
The NIA maintains that the arson was carried out with the intention to spread terror among the people and create communal disharmony and clashes in society.
He had allegedly come in contact with Pakistani national Syed Danish Ali Naqvi through Facebook in 2018.
Incriminating materials, including digital devices such as mobile phones, memory cards and SIM cards were seized.
It was further decided to hold monthly meetings of all the stakeholders to address the issue of organised crimes and criminals in these areas.