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
Andy Murray has beaten Belgian David Goffin to win the Davis Cup for Great Britain for the first time since 1936
Mercedes' Nico Rosberg has won the season-ending Abu Dhabi Grand Prix, with team-mate Lewis Hamilton coming second
Celebrities and campaigners have joined a huge rally urging world leaders to agree tough measures to curb global warming