Beijing - The Beijing police have confirmed the drug arrests of actors Kai Ko and Jaycee Chan, the son of action star Jackie Chan, said Chinese website NetEase on Monday night.
The police said the arrests were made on Aug 14 in Dongcheng, Beijing.
They said they arrested, among others, a 32-year-old Hong Kong actor surnamed Chan, a 23-year-old Taiwanese actor surnamed Ko, and a 36-year-old Beijing personal assistant surnamed Sun.
Both Chan and Ko tested positive for marijuana and confessed to taking it, the police said.
Later, the police found more than 100g of marijuana in Chan's residence and seized it. A 33-year-old unemployed Beijing man was arrested the next day on suspicion of selling drugs to Chan, the report said.
Apple Daily said Chan was suspected of harbouring drug users, an offence which carries a penalty of up to three years in jail.
Earlier in the evening, Ko's agent Angie Chai confirmed his drug arrest, and said he would be detained for 14 days.
In a press release issued at 8pm, she said she had just got a call from the Chinese police at 6.30pm, informing her that Ko would be detained for 14 days and that immediate family would soon be allowed to visit him.
She wrote: "We only know the fact that Kai Ko made a mistake, but we don't know the details."
She said she "nearly collapsed" when she got the call. She apologised to the public on his behalf, saying her company had neglected his "life education".
She said she had been anxious since Sunday, when she started hearing rumours about the arrest from her friends in Beijing but did not know how to verify the rumours.
Accompanied by a lawyer, she went to a detention centre in Beijing in the afternoon. The computers there did not have any information on Ko, and she left with a "glimmer of hope" that the rumours were false, she said.
She had not been able to believe the rumours, she said, because her company had always told actors not to touch drugs and Ko had told her he promised his mother to stay clean.
Ko shot to stardom with the 2011 film You Are The Apple Of My Eye. On Weibo, his co-star Michelle Chen posted "what a fool", as well as a crying face.