BEIJING -- The cybersecurity department of Beijing police said more than 3,100 suspects involved in over 6,600 Internet-related cases were detained in the city in 2018.

In early December, two suspects were captured in Changping district over infringing on citizens' personal information, along with over 100,000 pieces of personal stocks investment and money management records.

The suspects confessed that they have illegally profited over 200,000 yuan ($29,000) by selling the information to loan companies and wealth management companies since 2016.

Beijing police said they launched a campaign at the beginning of the year targeting hacker attacks, infringement on personal information, cyber fraud, online pornography, gambling and drug circulation.

More than 980 Internet companies were penalized, 38,000 mobile applications removed and over 3.2 million pieces of illegal information cleaned up during the campaign, the police said.