Sri Lanka's former army chief and parliamentarian Sarath Fonseka, who is serving a 30 month jail term , following his court martial is set to lose his parliamentary seat , after the Parliamentary Secretary General on Thursday made a request to the Election Commissioner to name a person for the vacancy created by the imprisonment of DNA Parliamentarian. Sri Lankan parliamentary secretary general Dhammika Kithulgoda today informed Election Commissioner Dayananda Dissanayaka that the parliamentary seat of 59-year-old Fonseka, who leads the opposition Democratic National Alliance (DNA), has fallen vacant. Authorities have requested the EC to nominate a person for the seat in Fonseka's place. The Sri Lankan parliamentary system allows the candidate securing the second highest votes to succeed the elected member of the respective constituency in the event of the incumbent's demise or disqualification. Fonseka is serving a 30-month jail term imposed by a court martial after the ruling was approved by President Mahinda Rajapaksa in his capacity as the commander in chief of the armed forces of Sri Lanka. He was sent to jail last week for alleged corruption in defence deals during his tenure as the army chief. Fonseka had contested the April 8 general elections from the Colombo district constituency and won a seat from the Democratic National Alliance (DNA) grouping he led. The DNA general secretary Vijetha Herath said that his party will challenge the decision in the Supreme Court to disqualify Fonseka and will also send a letter to both the Election Commission and the Parliamentary Secretary General. Meanwhile, local media reports suggest that Sri Lankan President may consider a plea to release Fonseka if it is made by the former army chief himself or a member of his family. Reports say that there is a laid down procedure for the granting of pardon and that had to be followed and that the President would not consider any “politically motivated” plea for Fonseka's release.