The Tamil National Alliance (TNA) leader, R Sampanthan yesterday rejected reports that a document had been signed with the United National Party (UNP).
In a written statement Sampanthan said such reports were "deliberately false".
"It is reported that a document signed by Mr Ranil Wickremesinghe Leader of the UNP and myself as the Leader of the ITAK/ TNA is being widely circulated. I state that I have signed no such document with the Leader of the UNP and the said document is deliberately false."
The TNA has faced some criticism within Tamils for its support for the UNP without ensuring concessions.
In recent days the TNA leader made a point of saying the party's support to the UNP was "not unconditional".