Chinese actor Kai Ko attends a press conference in Taipei on July 30, 2014. [Photo/IC]

Taiwan-based Chinese actor Kai Ko, or Ko Chen-tung, 23, was released on Friday morning after 14 days of administrative detention, according to an online statement released by the Beijing Municipal Public Security Bureau.

According to the authority's statement, Ko, who rose to fame in the 2011 movie You Are the Apple of My Eye, feels deep regret about his drug-taking activity and promises not to use drugs in the future.

An apology press conference will be held at 2.30 pm on Friday in Beijing, said Ko's agency.

Ko, along with singer and actor Jaycee Chan, son of well-known actor Jackie Chan, were arrested by Beijing police for using and possessing drugs on August 18.

More than five celebrities have been detained for taking drugs over the past few months in China including Zhang Mo, an actor and the son of Zhang Guoli, a well-known director, and Chen Wanning, a famous writer.