People gather at Guru Nanak Sikh Gurdwara, site of the 2023 murder of Sikh separatist leader Hardeep Singh Nijjar, in Surrey, British Columbia, Canada, on Friday. (Photo: Reuters)OTTAWA - Canadian police arrested three Indian nationals on Friday linked to the murder of a Sikh activist that sparked a major diplomatic clash between Canada and India. Authorities detained the suspects accused of roles in killing Canadian citizen Hardeep Singh Nijjar in Surrey, British Columbia. Police said the men were Indian citizens living in Edmonton: Karan Brar and Kamalpreet Singh, both 22, and Karanpreet Singh, 28. They have each been charged with murder and conspiracy to commit murder.