The TVK chief Vijay was grilled by CBI for over seven hours at its headquarters here on Sunday over last year’s stampede during his rally in Tamil Nadu’s Karur that claimed 41 lives, officials said, as reported by news agency PTI. The actor left the agency headquarters at around 6 pm, they said. This was the third session of questioning for Vijay. The actor was earlier questioned by the agency at its headquarters on January 12 and 19. During the probe, the CBI has gathered material that needs further questioning and clarifications from the actor, the officials said.