Congress supported NPP, an ally of the Bharatiya Janata Party to topple a Meghalaya tribal council led by the United Democratic Party (UDP). Pyniaid Sing Syiem, the two-time member of the district council (MDC) of the NPP, was on Tuesday unanimously elected as the new chief executive member (CEM) of the Khasi Hills Autonomous District Council (KHADC) in Meghalaya.