Four people arrested by police investigating an incident in Londonderry last month, during which masked men fired shots in the air have been released.
It was reported to police that at least 12 masked men had gathered in the Ardfoyle area of Derry, just off Bishop Street, shortly before 9pm on Friday 21 May.
Officers subsequently became aware of footage circulating on social media of shots being fired.
Searches have been carried out in the city and four men – aged 29, 42, and two aged 39 – have been arrested under the Terrorism Act.
They were taken to Musgrave police station for questioning, while a number of items were seized for further examination.
Police say their investigation is ongoing.