Detectives investigating the murder of Sharif Demirsay have re-arrested three people in connection with the killing.
Mr Demirsay, 65, from Kempston in Bedfordshire was stabbed to death at his home in May.
Bedfordshire Police say the all three people have been previously arrested and have been on police bail while enquiries continued.
The suspects are aged 15, 17, and 19. The Crown Prosecution Service authorised their re-arrest on the basis of further evidence.
A £10,000 reward is still available for information leading to the arrest and conviction of the offenders.
Anyone with information is urged to contact the Bedfordhsire, Cambridgeshire and Herts Major Crime Unit on 01480 422791.
Police have said the "jigsaw is coming together" in the hunt for the killers of a grandfather from Kempston in Bedfordshire.
Police have renewed their appeal for information over the death of a grandfather from Bedfordshire.
It's three months today since Sharif Demirsay, who was 65, was stabbed to death in front of his partner in Kempston in May.
It's three months today since a grandfather from Bedfordshire was murdered in his own home.Read the full story ›
Bedfordshire Police are making a renewed appeal for information to help catch the killers of a grandfather from Bedfordshire.
It is three months to the day since Sharif Demirsay, who was 65, was stabbed to death at his home in Kempston.
A £10,000 reward has been offered by police investigating the murder of a pensioner in his flat in Bedfordshire.
Sharif Demirsay was stabbed to death at his home in Kempston near Bedford in May. Today his grand-daughter also made an appeal for help in catching his killers.
Nina Gill, the granddaughter of murder victim Sharif Demirsay, says the reward is designed to help get justice for her granddad.
Bedfordshire Police have offered a £10,000 reward in the hunt for the killers of a Kempston pensioner.
Turkish-born Sharif Demirsay, 65, was stabbed to death in front of his partner after being attacked by three robbers in the hallway of their bungalow.
Mr Demirsay's 68-year-old partner was hurt as she tried to fight off the men who had got into their home in Vineyard Way on May 14 this year.
They stabbed him multiple times. As he lay dying in the hallway the attackers demanded money and jewellery form his partner, who was also stabbed and needed surgery.
£1,000 cash and gold jewellery was taken.
Police are still searching for the murder weapons - believed to be kitchen knives - that could have been discarded in hedgerows or gardens by the killers as they left the scene.
CCTV shows them approaching the house at 9.32. Three minutes later the same men run back the way they came.
Four people have been arrested and bailed by the police. They are aged, 17, 18, 19 and 24.
A drunk driver who drove the wrong way up the A1 while four times the legal limit has been jailed.
Sandeep Raj, 32, of Margetts Road, Kempston, appeared at Peterborough Crown Court on Friday (July 12) and was jailed for nine months and disqualified from driving for two years.
He had pleaded guilty to driving under the influence of alcohol and dangerous driving at an earlier hearing in May.
Raj was arrested at 9.15pm on Saturday, April 27, after members of the public called the control room reporting a car was travelling north on the southbound carriageway at Eaton Socon.
Detectives investigating the murder of Sharif Demirsay in Kempston near Bedford last month have issued new CCTV of a man they would like to identify.The man, who is wearing a hooded coat, was walking close to the scene of the murder in Vineyard Way on Tuesday 14 May.
Detectives need to establish who he is in order to eliminate him from their enquiries. Sharif, a 65-year-old grandfather who was known as Omar, was killed by three men wielding knives.They stole cash and jewellery from his 68-year-old partner, who also suffered knife injuries to her arm.