The Exchange Street West area in Belfast where the explosion happened is close to many restaurants and bars.
The city centre was extremely busy with shoppers and festive revellers when the incident happened.
More top news
South Korea's intelligence agency, which has a mixed record when it comes to North Korea, made the allegations.
More than 500,000 pieces of patients' confidential medical correspondence - including cancer diagnoses - have been mislaid by the NHS.
Corporation demands 'urgent investigation' into claims that outsourced enforcement staff targeted vulnerable people for fees.