A pipe bomb-type device has detonated in the front garden of a house in west Belfast.
It happened on Saturday night at a property in Aitnamona Crescent at about 23:30 GMT.
The occupant of the house reported hearing what they believed to be a firework going off.
On Sunday morning the remnants of a pipe bomb-type device were discovered in the garden of the property, and its front door had been damaged.
Following the discovery, army technical officers attended the scene and removed remnants of the device for further examination.
A number of homes were evacuated in the area, and the road was closed to allow the examination to take place.
Residents have since been allowed to return to their homes.
"Thankfully no one was injured as a result of this reckless attack," said Det Insp Stephen Harvey.
He said detectives were "working to establish a motive for this incident" and were appealing to anyone who noticed suspicious activity to contact officers.
"A pipe bomb exploded near a house in Aitnamona Crescent," said Sinn Féin MP for the area Paul Maskey.
"This device put residents' lives at risk and has forced people from their homes.
"I'm relieved that no one has been hurt."