Air New Zealand is slowly recommencing services after a 2km-high ash cloud erupted from Mount Tongariro on the North Island yesterday, causing cancellations in flights from Taupo, Rotorua, Wellington and Gisborne airports. Services to Rotorua have returned to schedule while Taupo and Gisborne airports are still being affected. The airline is advising customers to check the website for flight interruptions and updates.