Updated 11.55

Police in the North believe dissident Republicans were behind an attempt to hijack a bus in Derry last night.

A masked man ordered the driver to take a bomb to a police station in the city.

A number of passengers were on board at the time.

The bus driver has been praised for her bravery after she abandoned the vehicle before reaching her destination.

30 families had to be evacuated while an army bomb disposal team made the device safe.

Chief Superintendent Stephen Cargin told Highland Radio that the lady driver's actions saved lives: