A large bomb left in north Belfast was an effort to murder PSNI officers, police said.
The incident was one of three alerts during the day.
The north Belfast bomb prompted a day-long security alert with many homes and businesses evacuated, and police said it bore the hallmarks of dissident republicans.
It was left near the junction of the Crumlin Road and Brompton Park.
A controlled explosion was carried out on the cylindrical device. The alarm was raised when a bomb threat was phoned in to a priest.
The PSNI said the bomb was designed to kill officers, but could have murdered anyone in the vicinity.
In additional, a viable pipe bomb-style device was thrown into a garden in the Island Street area of east Belfast in the early hours of yesterday.
In addition, a security alert unfolded close to Magilligan prison, Co Londonderry, but the object was later declared to be “nothing untoward”.