A number of people involved in the major incident in Belfast tonight were unconscious at the scene and five people were taken to hospital, John McPoland, spokesman for the Northern Ireland Ambulance Service told UTV.
More top news
Kurt Cochran and his wife Melissa had been visiting London from the US to celebrate their 25th wedding anniversary and were due to fly home.
The Government has previously described the new coin - which enters circulation tomorrow - as "harder to counterfeit than ever before".
The European bloc said that Russia should release hundreds of people it arrested at anti-government protests and rallies.