Police have said that a device found under the car of an off-duty police officer was a "viable bomb" and was "clearly intended to kill."
The bomb has destroyed in a controlled explosion.
The device was discovered by the officer at around 2pm on Sunday. The car had been parked at his home on the Upper Newtownards Road - a busy arterial route into the city centre.
ITV News reporter Damon Green:
More top news
The Duke and Duchess of Cambridge met young people who have battled mental health issues on Saturday.
Former Chancellor Lord Geoffrey Howe was Margaret Thatcher's longest-serving Cabinet minister, also taking on the role of Foreign Secretary.
Lord Geoffrey Howe is known by many for his resignation speech which was seen as the catalyst which destroyed Margaret Thatcher.