A video has emerged of the shooting of Sikh activist Hardeep Singh Nijjar, as he left the parking lot of a gurdwara in British Columbia. The shooting caused a huge diplomatic rupture between India and Canada.

The fuzzy security video captures the entire sequence of what looks like a coordinated plot to kill Nijjar involving six people in two different cars. Another video from security footage shows Nijjar as he came out of the gurdwara before getting into his grey Dodge Ram pick-up truck.

The latest video footage which emerged today was obtained by The Fifth Estate, a show on CBC (Canadian Broadcasting Corporation).

The video shows Nijjar start to drive out of the parking lot when a white sedan draws up and blocks his truck. The two killers jump out of it and shoot him. They then flee the scene and jump into a second car, a silver Toyota Camry. Police said that the two killers had pumped over 30 bullets into Nijjar.

Two witnesses to the shooting who were playing football on a nearby field were also interviewed on the programme. One of them, Bhupinderjit Singh Sidhu, tells the interviewer: "We saw two guys running...We started running towards where the sound was coming from." Sidhu said both men were wearing black and were masked.

The second football player Malkit Singh says in Punjabi, "I went after the two men. One of the men running away was really heavy set and he couldn’t catch his breath. They had masks on." He also insists: "I saw their eyes. They looked Indian."

Sidhu added that he told Malkit to pursue the killers while he attempted to resuscitate Nijjar. "I tried to press his chest and tried to shake him to see if he was breathing. But he was totally unconscious. He was not breathing."

The programme also interviews Gurpatwant Singh Pannun, the US-based Sikh activist who says he knew Nijjar well. Pannun now travels with armed guards who guard him and check his house before he enters.

The Canadian police had indicated some months ago that they knew the identity of the killers and would pick them up shortly. However, no arrests have yet been made. The programme said five other men had received what are called 'Duty to warn' notices from the police warning them their lives might be in danger.

Soon after the shooting Canadian Prime Minister Justin Trudeau indicated that India was involved in the plot and this charge severely damaged India-Canada relations. India asked Canada to downsize its high commission and consulates in India.