President Maithripala Sirisiena is set to leave for Singapore for a four-day visit tomorrow, sources close to the President said. 

When asked about the programme of the visit, an official of the Presidential Secretariat said they were still unaware of it. 

The exact reason for the visit has not yet been announced by the President's Office officially. 

Sirisena returned from a five-day tour in the Philippines, a few days ago. 

Sirisena came under criticism from the UNP for taking a group of SLFP MPs as his delegation to the Philippines.