Sri Lanka's Prime Minister Mahinda Rajapaksa resigns
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Mahinda Rajapaksa has resigned as Sri Lanka's prime minister, seven weeks after he was appointed.
Mr Rajapaksa, Sri Lanka's former president, signed his resignation letter in a ceremony at his house.
His son, Namal, told the BBC his father had quit to ensure national stability.
In October, President Maithripala Sirisena sacked then prime minister Ranil Wickremesinghe, replacing him with Mr Rajapaksa.
Mr Wickremesinghe is expected to return to office on Sunday.
His party's spokesman Harin Fernando told the BBC: "The president has agreed to swear in Ranil Wickremesinghe as Prime Minister tomorrow at 10 am."
