Kaur (85), wife of a former Namdhari sect chief, was shot dead by unidentified persons at Bhaini Sahib, the international headquarters of the sect, on April 4.
The followers, including women, submitted a memorandum to Deputy Commissioner and Commissioner of Police Ludhiana in this regard.
"We have full faith in the state government and are satisfied with the ongoing investigations conducted by the police in the case," Surinder Singh President of the 'Vishav Namdhari Sangat' said while leading the procession.
J S Aulukh, Police Commissioner Ludhiana told the community members that they were doing their best to solve the case.
Police had already announced a reward of Rs 10 lakh for information about the accused.
Besides, a reward of Rs 20 lakh had also been announced by Namdhari Darbar.