The Government Printing Department released the relevant special gazette yesterday. However, Sirisena Sunday issued notice to reconvene Parliament on November 14.
The sudden development came amid growing tensions between Sirisena and Wickremesinghe on several policy matters and the President has been critical of the Prime Minister and his policies, especially on economy and security.
Foreign Minister Sarath Amunugama told a news conference Jayasuriya was not being impartial.
The United States and the European Union have urged the president to immediately summon parliament and let deputies decide who is to lead the country.
"I wish to emphasize that I am compelled to accept the status that existed previously until such time that they (the pro-Wickremesinghe lawmakers) and the new political alliance prove their majority in Parliament", he said.
He said he hadn't received any money yet.
The rally, attended by thousands of supporters, was the first public show of Mr Sirisena and Mr Rajapaksa together after the island nation plunged into a constitutional crisis. Although Wickremesinghe and the opposition have called the president's dismissal unconstitutional, Rajapaksa remains one of the country's most popular leaders and will not be easy to shake.
Rajapaksa claims he has enough numbers to prove his majority and at least six of Wickremasinghe's men have defected to his side.
Parliament road from Borella was a sea of heads as the crowds kept streaming into the Parliament Roundabout where the rally under the theme "Ratama Rakina Jana Mahimaya" presided over by the President and the Prime Minister was held.
The Tamil National Alliance, a coalition of parties representing the Tamils, vowed on Sunday that its 15 members would back the no-confidence motion against Rajapaksa. "I trust you and you can always trust me", Rajapaksa said.
Supporter of Mahinda Rajapaksa has is to organize a large rally near the Parliament in in Colombo Monday.
After sacking Wickremesinghe, Sirisena announced that he made the replacement in part because Wickremesinghe and a Cabinet colleague were behind an alleged assassination plot against him.
The political crisis in Sri Lanka began after Sirisena's broader front United People's Freedom Alliance (UPFA) announced that it has chose to quit the unity government with Wickremesinghe's UNP.
Tensions had been building between Sirisena and Wickremesinghe for some time, as the president did not approve of economic reforms introduced by the prime minister.