Leonard Flower Luton murder probe: Motive 'unclear'
The motive for an "unprovoked attack" which killed a retired computer analyst who had been tidying his garage is "unclear", police have said.
Leonard Flower, 67, of Carnegie Gardens, was pronounced dead at the scene after being set upon at about 14:00 BST on Tuesday.
He was discovered shortly afterwards by a member of the public who was delivering leaflets.
A 35-year-old man has been arrested in Warwickshire on suspicion of murder.
Father-of-two Mr Flower, known as Len, lived with his wife, who police said was in the house at the time of the incident but she was "unaware of what had happened until the police and paramedics arrived".
Det Ch Insp Jason Gordon from the Bedfordshire, Cambridgeshire and Hertfordshire Major Crime Unit said: "This is a violent incident that has left a family and community in total shock.
"While we have a man in custody, it is very important that anyone who has information about the incident comes forward and speaks to the police.
"We need to build a picture of what led to this and why he came to be a victim in this horrific event.
"We are still very unclear of the motive for this crime."