Police and members of a Protestant loyal order came under attack by petrol bombers in a night of unrest in Derry.

Two petrol bombs were thrown at the Apprentice Boys Memorial Hall in the city centre as people who had taken part in a parade earlier in the day socialised inside.

No-one was injured but police who attended the scene were then also subjected to attack, with a further 15 to 20 petrol bombs and other missiles thrown at them from nearby Fahan Street.

A number of wooden pallets were then placed on the street and set alight.

No officers were injured and calm was restored at about 1am.

The violence unfolded amid raised tensions in the city after a number of contentious incidents during the Apprentice Boys annual August parade yesterday.

Members of a loyalist flute band are to be reported to prosecutors after wearing a Parachute Regiment symbol on their uniforms during the parade.

Loyalists across Northern Ireland have been using the symbol to show support for Soldier F – a former British soldier facing prosecution for two murders and four attempted murders on Bloody Sunday in Derry in January 1972.

A large number of police officers accompanied the Clyde Valley Flute Band, from Larne, Co Antrim, as it made its way through the city.

A bus carrying the band home was then stopped by police on the outskirts of the city.

Officers in armoured vehicles attended as the names of some bandsmen were taken.

Police are also investigating an illegal protest staged by dissident republican group Saoradh during the Apprentice Boys parade.

Five people were arrested on suspicion of public order offences during the day.

Commenting on last night's attacks, PSNI Superintendent Gordon McCalmont said the violent behaviour cannot be tolerated.

On the incidents during the parade, a PSNI spokesman said: "A report will be forwarded to the Public Prosecution Service in respect of behaviour and symbols displayed by one band.

"Police will also be reporting a number of individuals in relation to an un-notified protest."