BEIJING -- A total of 15 short video sharing apps had been removed from app stores for spreading illegal content, the Cyberspace Administration of China (CAC) said Friday.

The apps were found to be indulging the spread of vulgar, violent, pornographic or pirated content, and promoting distorted information, according to the CAC and five other central agencies that jointly launched a crackdown campaign.

Three of them were shut down, while the other 12 were removed from app stores for overhaul.

In addition to the 15 apps, four other short video sharing platforms were also warned for violations and urged to shoulder their responsibilities.

Strengthened guidance and regulations are needed for the healthy development of the industry, the CAC said.