An ambulance and car crashed in the middle of Portadown, Co Armagh causing traffic chaos for around an hour.
No one was injured in the collision which happened at around 2.35pm on Saturday.
It is understood the ambulance was travelling with the siren and emergency lights flashing at the time.
A PSNI spokesperson said: “No-one involved in the Road Traffic Collision required medical attention. The RTC was cleared from the road by approximately 3.25pm.”