Hundreds of thousands of protesters in the South Korean capital, Seoul, to demand the resignation of President Park Geun-hye.
It is deployed large numbers of police to prevent demonstrators from reaching the presidential palace.
He accused Ms. Park to let her friend, Choi Soon-torrent, to gain access to government documents without permission.
The president, whose popularity has fallen because of the scandal, said it was “sad”.
Organisers said a million had turned out to protest on Saturday, while police estimated the number at 260,000.
It is the latest in a series of mass rallies against it because of this issue.
And friendship away in Seoul?
Ms. Choi accused of trying to extort huge sums of money from South Korean companies and is under arrest on charges of fraud and abuse of power.
She was arrested last week on suspicion of using her friendship with Ms. Park to collect donations to fund the business, non-profit is controlled.
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