Two people have been critically injured, another moderately, following a crash between a car and motorcycle in the Marlborough District that has closed a section of highway.
Two rescue helicopters and other emergency services attended the incident about 10.15am on State Highway 6, Renwick, south of the intersection at SH62.
St John said two patients were transported in a critical condition to Wellington Hospital while another, moderately injured, was taken to Wairau Hospital.
Fire and Emergency New Zealand said crews from Renwick and Blenheim responded to the incident.