UPDATE : 05.45hrs - A NIAS spokesperson said "The Northern Ireland Ambulance Service received a 999 call at 18:51 on Sunday 22 August following reports of a two vehicle Road Traffic Collision on Portrush Road, Portstewart.
"NIAS despatched two Emergency Crews to the incident.
"Following initial assessment and treatment at the scene, two patients were taken to Causeway Hospital.
Emergency services are currently at the scene of a head-on collision on the Portrush Road, Portstewart involving two vehicles .
Fire, police, and ambulance personnel are in attendance.
Diversions are in place at Station Road and Millbank Avenue.