The four survivors were from the same family and remain in a 'serious' condition at various hospitals across Ireland Police in Ireland have made a breakthrough with their investigation as tributes have been paid to the five teenagers who were killed when they drove the wrong way down the M9 Key points and original sources are listed below.

• The four survivors were from the same family and remain in a 'serious' condition at various hospitals across IrelandS1

• Police in Ireland have made a breakthrough with their investigation as tributes have been paid to the five teenagers who were killed when they drove the wrong way down the M9S2