CBI today got four day's remand for R K Jain, Director of the Anti-Dumping department in the Ministry of Commerce and Industries for further investigation in corruption cases against him. CBI spokesperson Harsh Bhall told the reporter today that RK Jain was arrested yesterday along with the officials of three private companies in corruption charges. He said searches are being conducted at 15 locations in Delhi, Noida, Mumbai and Jharkhand. A cash of 7.25 lakh rupees has been seized.