Capital markets watchdog Securities and Exchange Board of India, Sebi has fixed one-year target for completion of all its investigations, while sharply focusing on cases involving bigger offences. Sebi Chairman U K Sinha said, this 12-month target would apply to all the cases where an investigation has been initiated this year onwards. At the same time, the Sebi has expedited its probe into all long-pending cases and their numbers have been brought down drastically. During an interview to a news agency in Delhi, Mr Sinha said, there are 221 investigations pending with Sebi right now. Out of these, there are only 20 cases that are more than three-year old and 86 cases are of one year or less.The Sebi chief also gave a stern warning to those indulging in bigger offences, saying that such cases were being dealt with extra focus and most of the smaller offences were being prevented very effectively by a robust surveillance system put in place at the regulatory authority. He said, the surveillance mechanism is also ensuring a continuous pipeline of cases for further follow-ups including by way of investigations.