Chetan Mohan, the son of gangster-turned-politician Anand Mohan Singh, has justified his father's release from jail after he was convicted in the murder of an IAS officer 29 years ago. "He has obeyed the court. He has served his sentence. It has also been very difficult for the family," Chetan Mohan told NDTV. "Everyone knows my father is innocent," he added. In 1994, the then district magistrate of Gopalganj G Krishnaiah was killed by a mob that was protesting over the murder of another gangster-politician belonging to Anand Mohan Singh's party. They were allegedly egged on by Mr Singh.