Officers made the arrests in an operation this morning in the Blackpool area.

Sixteen men aged 17 to 55 have been arrested on suspicion of conspiracy to commit burglary and will be interviewed at police stations in Burnley and Blackburn during the course of the day.

Detectives launched an investigation after an incident in the early hours of Monday, in Salterforth.

War veteran Bob Schofield (89) and his wife Mollie (87) were asleep in bed when intruders entered their home. Bob confronted the intruders and was beaten repeatedly, causing facial injuries. Mrs Schofield was not physically injured, but was left shocked.

The couple, who were discovered by relatives, were taken by ambulance to Airedale Hospital where Bob remains. Mollie is being cared for at a nearby care home. Their condition is said to be improving slowly.

Police believe cash and jewellery were stolen from the couple' s home.

Acting Det. Insp. Dave Groombridge said: "We have arrested a number of people this morning and will be interviewing them during the course of the day. Having said that, I would still appeal for anyone who may have information about this dreadful offence to come forward and speak to us, including those in the criminal fraternity who may be able to help. We do have a number of lines of inquiry which we are actively pursuing."

Reassurance patrols have taken place in the Salterforth area since the incident.

Bob and Mollie' s son, John, and their daughter-in-law, Dee, have thanked everyone who has sent cards, flowers and messages of goodwill.

Anyone with information should call Pendle CID on 01282 472644 or Crimestoppers on 0800 555 111.