Doctors have been put on standby at the Ulster, Mater and Royal hospitals, in Belfast and total of 15 people have been admitted to hospital. The are 11 people at the Royal and four at the Mater, said to be in a in a stable condition and are being kept overnight, according to UTV.
A Northern Island Ambulance Services spokesman said they dealt with casualties "at varying levels of consciousness".
More top news
Absolutely rock-solid? Investors don't think so.
Fans of the hugely-popular Disney film will soon be able to sing-a-long and watch the characters come to life on stage.
The tiny sea creature was one of over 120 hatchlings to emerge from a nest on Castaways Beach and make its way to the ocean.