Source –Ā indiatimes.com CHENNAI: Three months after a special court forĀ CBIĀ cases discharged former Union ministerĀ Dayanidhi MaranĀ and his elder brother Kalanidhi Maran from the decade-oldĀ illegal telephone exchange case, the CBI has approached theĀ Madras high courtĀ challenging it. Admitting the criminal revision petition, Justice G Jayachandran ordered notice toĀ Maran brothersĀ and seven others accused in the case returnable by June