The CBI Sunday arrested Delhi's Deputy Chief Minister Manish Sisodia in connection with alleged corruption in the now-scrapped excise policy relating to the sale of alcohol, in a move that could plunge the city into a governance crisis and further widen the political rift between the AAP and the BJP-led Centre. Sisodia's arrest, one of the most high-profile actions against an opposition leader, comes after that of Satyendar Jain, Delhi's then-health minister, in June last year. Both ministers have led what the Aam Aadmi Party describes as the successful transformation of Delhi's education and health services, contributing to the party's popularity and continued electoral success.