Norwich City football club plans to lodge a complaint with Suffolk police over the treatment of fans at the derby game on Thursday.

Speaking on social networking website Twitter, the club's chief executive David McNally wrote: 'Really disappointed with the Police treatment of our fans on Thursday night. We will be lodging an official complaint.'

The 5-1 Norwich City victory at Portman Road was marred by reports of trouble after City fans were delayed from getting into the ground by Ipswich fans blocking their way in.

Suffolk Police said there were 19 arrests, mostly linked to public order offences, and 13 people were ejected from the Portman Road ground.

The behaviour of some Ipswich Town fans was strongly criticised by police.

Seven men have been charged with threatening behaviour after being arrested at the East Anglian derby.

The men were all arrested when Ipswich Town played host to Norwich City on Thursday night.

The individuals – all from Ipswich – were taken into custody by police monitoring proceedings at Portman Road and seven of them will appear at South East Suffolk Magistrates' Court in Ipswich on May 4 and 9.

They are aged from 18 to 49 and were all charged yesterday evening.

In addition to these charges, a 24-year-old has been released on bail while police make further investigations and a 29-year-old has been cautioned. Both men are from Ipswich. One man from Norwich was also charged with possession of class A drugs after being arrested at the match.

The 32-year-old was also held at Ipswich Police Station.

Police made 19 arrests and were forced to eject 13 supporters from the stadium.

For more on this story, see Monday's newspaper.