Cyber Crime cell of CB-CID got a tip-off that two websites were displaying obscene images and videos of children, a police press release said.
"The information also revealed that a resident of Chennai is hosting these websites," it said.
An inquiry was conducted and it revealed that a man Siddhattha Velu and his wife Priscilla Margaret Dhanaraj were linked with these websites and their email ids were also linked to them, it said.
A case was registered under provisions of Information Technology Act and searches were conducted at the residence of the couple at Sholinganallur here.
Materials establishing the couple's links with these two child porn websites besides other websites with porn content were recovered and seized, the release said.