UTV News is reporting that Army bomb experts are being sent to the scene of the small explosion in Belfast Cathedral quarter.
There are reports that restaurants and other premises in the area are being evacuated.
More top news
Robert Brown admitted causing the deaths of the two young brothers by dangerous driving at a hearing in March.
How do Nintendo’s new cardboard-based gaming sets work?
The self-build crafting sets incorporate the Nintendo Switch games console to create dynamic play sets.