The accused, Surendra Bahadur Singh alias Tallukdar Singh and his son Dipak Singh, were arrested today in connection with Manoj's murder, SHO Musafirkhana Dipendra Singh said.
A blood-stained iron rod was also recovered from the accused, police said.
Manoj alias Dara, son of Secretary of UP Congress Committee Govind Ojha was killed on Sunday.
Six persons, including the two arrested, were named in the FIR.