A Chinese activist has been released on bail after being detained in 2015 for suspected involvement in "illegal crimes," local police in Tianjin announced Thursday.

According to the official Sina Weibo account of the Tianjin police, 24-year-old activist Zhao Wei, also known as Kaola on the Internet, has been granted bail pending trial in light of her confession to her crimes and her "good attitude."

Zhao was arrested in 2015 for suspected involvement in unspecified "illegal crimes," police said.

On Thursday afternoon, Zhao posted an update to her Weibo account saying, "It is so good to breathe freely. I am the Kaola you've been missing. A year is so long yet too short. Right now I only want to express my appreciation to my family and to the police who offered me countless help like family."

Her last Weibo post on May 17, 2015 said that she was participating in a lawyers' rally outside the high court of East China's Jiangxi Province to demand that lawyers be granted rights to access case files.

Zhao reportedly had been working as an assistant to Beijing-based human rights lawyer Li Heping at Beijing's Global-Law Law Firm since October 2014. She was allegedly taken away by police in July 2015 and was officially arrested along with six other lawyers, four of whom were from Beijing's Fengrui Law Firm.

In an open letter released on Thursday, Zhao said that she began working at Global-Law in October 2014 as Li's assistant and later realized that funds for some of the firm's projects as well as her salary came from an overseas organization. 

Zhao said the organization has been collecting and hyping sensitive domestic cases in the name of "fighting torture" to attack China's judicial system and social system.

"Seminars" organized by the overseas group were held to provide a platform for human rights lawyers and sensitive figures to communicate with each other so that the lawyers could help the organization conduct peaceful revolution in China, said Zhao.

Fengrui Law Firm was broken up in July 2015 after it was found to be serving as a platform for a "criminal gang" that had orchestrated over 40 incidents since July 2012 to disturb social order under the guise of defending rights and justice, the Xinhua News Agency reported in July 2015.

On Monday, the wives of six lawyers and activists who were also arrested along with Zhao rallied outside the Supreme People's Procuratorate in Beijing to protest Tianjin local authorities' alleged move to bar them from visiting family who were still behind bars, the BBC reported.