The former Congress MP was accused of inciting mobs during the riots.
The families of the victims want the court to order the CBI to re-investigate the case while the probe agency said there was not enough evidence in the matter.
Former Congress MP Sajjan Kumar is also facing trial in connection to the case.
He was accused of provoking a mob to kill six Sikhs in Delhi Cantonment area in 1984.
The CBI has concluded its arguments against Kumar.
Lakhwinder Kaur, whose husband Badal Singh was killed in the riots, has demanded that the CBI should record the testimonies of witnesses who were left out, reports said.
Anti-Sikh riots had erupted in some parts of the county in 1984 after the assassination of late Prime Minister Indira Gandhi by Sikh bodyguards in the national capital.
--IBNS (Posted on 04-04-2013)