New Delhi, July 10 (TIWN) In a latest development in the Chinese visa case, the Central Bureau of Investigation (CBI) on Saturday conducted searches at the residence of Congress MP Karti Chidambaram in Chennai and recovered some incriminating documents from there.

The keys were understood to be with Karti Chidambaram's wife who was abroad at the time of the CBI searches. The searches in that portion of the house were resumed after the investigation agency received the keys, officials said.

They also said that Saturday's searches were part of the May 17 investigation in the Chinese visa case.

"CBI search at Congress leader Karti Chidambaram's residence in Chennai is in connection with an alleged Chinese visa scam, as part of a search that remained incomplete earlier as a few biometric lockers could not be searched," the CBI sources were quoted as saying by news agency ANI.