Silva was sentenced to death in 2016 along with four others over the murder of former presidential Advisor Bharatha Lakshman Premachandra.
In the statement, MP Ganesan notes Silva was under the influence of liquor at the time of the incident.
Noting that youth must not be imprisoned for prolonged periods, he adds that they must be given the opportunity to rectify their mistakes and move on the right path.
Ganesan pointed out that the former parliamentarian might have been rehabilitated in the five years he has already served in prison.
He further added that several Tamils Nationals have been imprisoned due to political reasons and they also must be reintegrated into the society.