Sri Lanka's parliament descended into chaos for a second day on Friday. Photo: Reuters

The vote went ahead anyway and for a second time lawmakers turned against Rajapaksa and his new government, possibly opening the way for the return of Ranil Wickremesinghe as prime minister.

"We have the majority," Wickremesinghe told reporters. "We can form our government and we will act accordingly."

Kicked Out

Sirisena is now faced with the choice of either reappointing the man he kicked out only a few weeks ago, or allowing the crisis to continue with potentially damaging consequences for the economy.

Rajapaksa supporters poured on to the floor of parliament, surrounding the Speaker's chair, and demanded the arrest of two lawmakers from Wickremesinghe's party for allegedly bringing knives into the house on Thursday.

An MP from Rajapaksa's Sri Lanka Podujana Peremuna party sat on Speaker Karu Jayasuriya's chair surrounded by more than 20 lawmakers, delaying the start of proceedings. Rajapaksa loyalists then tried to prevent Jayasuriya from sitting on a second chair brought in by police.

When Jayasuriya started calling out names to know whom MPs supported, Rajapaksa supporters threw the books and chili paste at him.

Parliament on Wednesday passed the first no-confidence motion against Rajapaksa and his government with the backing of 122 of 225 lawmakers in a voice vote, followed by a signed document. Sirisena had not accepted that result, calling for the second vote.

Deadlock

Sirisena dissolved parliament last week and ordered elections to break the deadlock. But the Supreme Court ordered a suspension of that decree on Tuesday until it had heard petitions challenging the move as unconstitutional.

Sources close to the leadership have said Sirisena's decision to sack Wickremesinghe came after the prime minister's party rejected the president's request to back him for second five-year term in the 2020 presidency.

They had also split over whether to back Chinese or Indian investors in various projects, the sources said.

India and Western countries have requested Sirisena act in line with the constitution while raising concerns over Rajapaksa's close ties with China.

Beijing loaned Sri Lanka billions of dollars for infrastructure projects when Rajapaksa was president between 2005-2015.

Tourism accounts for nearly five percent of the economy and is a key main foreign exchange earner, along with the garment and tea industries, and remittances from Sri Lankans working abroad.