Questions have arisen whether Parliamentarian Lasantha Alagiyawanna will align himself with the Api Sri Lanka organization masterminded by former President Chandrika Bandaranaike Kumaratunga.
Alagiyawanna is known to be a close associate of Kumaratunga.
The first convention of the organization will take place this evening at the Sugathadasa Indoor Stadium, under the patronage of Kumaratunga.
The SLFP has already warned that stern disciplinary action will be taken against party members attending the rebel convention.
The Api Sri Lanka Organization is supportive of NDF candidate Sajith Premadasa's presidential bid.