A top Home Ministry official said the probe would look into all possible angles and find out whether there was any link of Maoists to the violence in which one senior executive was killed.
Appearing in a panel discussion on TV Channel Headlines Today, Chairman R C Bhargava described the violence as a "class attack".
"These were left-wing extreme elements who incited violence at Maruti. It was a conspiracy which was kept within a small group of people," a statement from TV Today Network, which owns Headlines Today, said quoting Bhargava.
