A controlled explosion was carried out
Police in the North have launched an attempted murder investigation following the discovery of a bomb in Belfast.
The viable pipe bomb was found on Tuesday morning in the North Queen Street area.
Detectives believe it was thrown at a police vehicle the previous night.
A controlled explosion was also carried out.
Peter Montgomery of the PSNI said: "If this is an attack on police officers, we are very lucky that none of my colleagues or members of the public were injured."
"This incident also caused massive inconvenience, disruption and upset for the local community of north Belfast and I would like to reiterate our thanks to the members of the public for their patience and cooperation during the operation on Tuesday morning."
Police are appealing to anyone who noticed anything, or has any information, to contact them.
They are also due to conduct house to house enquiries.