Serious tensions emerged with the PYD, however, in the wake of an incident in Amuda on 27 June 2013, when YPG fighters killed six civilians. From then on, PDPKS members left the pro-PYD militias, and the party began to cooperate more closely with the KDPS, for example supporting the KNC's decision to join the (anti-PYD) National Coalition for Syrian Revolutionary and Opposition Forces. The PDPKS also began to distance itself from the PUK, which was still friendly with the PYD but also politically weakened at the time. In late 2013, the PDPKS rejected the declaration of the autonomous region of Rojava by the PYD as "unilateral solution[] in isolation from the national forces", and claimed that the new canton system was completely controlled by the PYD-led TEV-DEM organization. Darwish represented the KNC during the Geneva II Conference on Syria in early 2014.