Unidentified assailants had opened fire at the cavalcade of Dhadrianwale on May 17 in which he had a narrow escape, but his aide Bhupinder Singh Khalsa was shot dead.
Meanwhile, 'Antim Ardas' (post-death) ritual for Khalsa was performed at his native village, Khassi Kalan, about 15 kms from here.
Speaking on the occasion, the preacher said Sikh community members would present memoranda to the Deputy Commissioners of their respective districts seeking a CBI probe on the issue on May 30.
"I was the target of those who had attacked my convoy on May 17 at Ludhiana. It was only an act of mistaken identity that Sant Bhupinder Singh became the victim," he said.