A pipe bomb has been defused by the Army in south Belfast.
The pipe bomb was discovered in south Belfast
The "viable device" was discovered along with a quantity of ammunition in an alleyway off Knockbreda Park.
A police spokeswoman said: "In a follow-up search, one man was arrested and is currently assisting police with their inquiries."
The pipe bomb was found at about 2145 BST on Friday. The PSNI has appealed to anyone with information or who noticed anything suspicious to contact police.