China and the U.S. on Tuesday opened a second round of high-level dialogue regarding the combat of cybercrime, after the first round led to the arrest of 17 Chinese people suspected of spreading child pornography across the globe.

Information regarding a China-based person suspected of spreading child pornography through a network was first shared by the U.S. Department of Homeland Security in February with the Chinese Ministry of Public Security (MPS), Global Times reported.

Preliminary investigation from the U.S. said the suspect, who is a VIP member at several pornography sites, may have been involved in sexual abuse against children, said the MPS.

Based on the information, Chinese police soon located and caught a suspect surnamed Sun, who is suspected of spreading child pornography online, and another one surnamed Huang, who is suspected of molesting and sexual abusing children and making pornography.

Huang allegedly made videos and photos of his molestation or other sexual abusage of children. He sold such videos and photos to Sun, who then uploaded them to overseas websites, according to the MPS.

Chinese police also caught another 15 people suspected of sexual abuse against children and making or spreading child pornography, Global Times reported.

The crackdown on the child pornography network followed the first Sino-US high-level dialogue in December 2015.

The latest Sino-US dialogue will feature further discussion on tabletop maneuvers for cyber security, hotline mechanisms on cybercrime information exchange, among others, the news site thepaper.cn reported, citing the MPS.