A night-time curfew in Bangkok and several provinces imposed after anti-government protests will be extended until Tuesday, Thai Prime Minister Abhisit Vejjajiva said in his weekly address to the nation on Sunday. The curfew in Bangkok and 23 other provinces was imposed on Wednesday after riots swept the Thai capital, in which more than 50 people were killed and over 400 injured. Riots had been ongoing in Thailand since March 14. Protesters demanded the dissolution of parliament and early elections. The Thai premier rejected on Tuesday an unconditional offer from the protesters to negotiate and insisted there would be no talks until the dwindling anti-government movement abandoned its encampment in Bangkok's upmarket Rajprasong district, where it has been since April. Later on Tuesday, government troops stormed the encampment in an assault operation that killed at least three demonstrators and an Italian journalist. The assault sparked violence and arson attacks in Bangkok.