Police arrested seven people when they were called out to deal with outbreaks of public disorder in south and east Belfast on Easter Monday.
A PSNI spokesman said: "Disorder occurred in Castlereagh Street, Ormeau Park and Central Train Station and a number of arrests have been made."
Six men were arrested in Ormeau Park, south Belfast, on suspicion of a number of public order related offences.
There were disturbances at Central Station where a large crowd had gathered.
A man and a woman were reportedly bitten by a police dog during the ruckus at the city train station. Police said the matter would be reported to the Police Ombudsman's office.
The crowd later dispersed with no reports of any arrests
Meanwhile, a man in his 40s was arrested in Castlereagh Street.
Officers remained in the areas affected to monitor the situation on Monday night.