It had all started with the lodging of an FIR in 2014 by the Arvind Kejriwal government against Reliance Industries Ltd (RIL), Mukesh Ambani and others including UPA ministers M Veerappa Moily and Murli Deora (since dead), accusing them of "fixing" gas prices.
RIL moves Delhi High Court for quashing of FIR and challenging a 1993 notification of the Centre giving power to Delhi government's Anti-Corruption Branch (ACB) to probe union government employees.
Centre moves HC opposing FIR against the ministers contending that ACB has no powers or jurisdiction to probe.
ACB tells HC it can't probe gas pricing case against RIL and an ex-UPA minister as Centre's July 23, 2014 notification takes away its jurisdiction to investigate central government employees.
Delhi government tells HC that ACB can prosecute RIL and ministers.
HC says ACB has jurisdiction to arrest policemen who come under the Centre.
Delhi government moves HC to restrain LG appointee ACB chief M K Meena from entering anti-graft body's office.
AAP government asks HC to refer to larger bench the petitions on the powers of LG regarding governance of Delhi.
HC gives verdict, says LG is administrative head of NCT and not bound to act on the advice of Council of Ministers.
SC issues notice to Centre on six appeals of Delhi govt challenging HC verdict that held that LG is administrative head of national capital.
SC refers to constitution bench the pleas on Delhi-Centre row over governance.
SC reserves verdict on batch of appeals challenging HC verdict.
SC says LG does not have independent decision making powers and is bound to act on the aid and advice of the Council of Ministers.