Eleven arrests have been made in connection with a suspected gangland clash in Keighley in August.

Most of the arrests relate to alleged disorder, assault and robbery offences in Lawkholme, and involve young men from the Keighley and Bradford areas. They have all been released on police bail. None have yet been charged.

Detectives investigating the August 22 incident - in which shots were fired - have seized various items of clothing and other articles, which have been sent for forensic tests. Cartridges recovered at the scene are also being examined.

Police say that despite the arrests - and more are expected shortly - they are disappointed with the public response to appeals for information.

Det Insp Trevor Gasson, who is heading the investigation, code-named Operation Penzance, said: "We have had meetings with community leaders and are continuing to carry out house-to-house inquiries in the area, but we have had very little information so far from the public.

"We need independent evidence, and I would appeal once again for anyone who has information which may be of help to the inquiry to come forward."

Parts of Lawkholme were turned into a battleground when a car chase ended in Parson Street, and a brawl left a trail of damage, including five wrecked cars and smashed bollards. Three people were taken to hospital. The following day two men were assaulted on an industrial estate, yards from the scene of the original trouble.

Anyone with information is asked to contact Keighley Police on (01535) 617167.