Andhra Pradesh CID officials are retrieving crucial information from the laptops, hard-disk's and various documents, seized during raids conducted at the offices of the scam-ridden Satyam Computers, to unravel the fraud in the firm.

The raids were conducted at the residences of Satyam's former chairman B Ramalinga Raju, his brother and former MD Rama Raju and ex-CFO Vadlamani Srinivas on January 11 and 12.