Kerala Chief Minister Pinarayi Vijayan on Tuesday directed the state police chief to register a criminal case against Director General of Police Jacob Thomas, presently posted the director of Institute of Management in Government here.The reason for this action is a violation of service rules as Thomas did not follow the basic process when he released two books recently.After the release of his first book, allegedly in breach of the norms, the state government appointed then Home Secretary Nalini Netto to look into the matter. After she gave an adverse report, a three member committee under the Law Secretary was set up to probe the case and it also confirmed that there were lapses.It was after this that Vijayan issued the orders for registering a criminal case and also for departmental action against Thomas.In his reaction, Thomas told the media he is not aware of any action being taken.Thomas was appointed as head of Vigilance the day Vijayan assumed office last year, but a few months back, he was shifted out and made the director of IMG.