Michael Gilbert's headless body was found at a gravel pit pool
A defendant on trial for the murder of a man whose body was found in Bedfordshire has been found not guilty.
The body of Michael Gilbert was found in the Blue Lagoon in Arlesey last May.
Robert Watt, 20, of Chertsey Close, Luton, was on trial at Luton Crown Court for the murder of Mr Gilbert and familial homicide.
The judge said there was not enough evidence for the jury to convict Mr Watt of murder or manslaughter. Mr Watt remains on trial for familial homicide.
His older brother James, 27, and of the same address, is on trial for Mr Gilbert's murder. He denies the charge.
The prosecution alleges that for a number of year the vulnerable man was kept like a slave at various houses in Luton where the extended Watt family lived.
The brothers' father Antonio Watt, 70, also of Chertsey Close, is charged with perverting the course of justice.
Their mother, Jennifer Smith-Dennis, 58, is charged with familial homicide and perverting the course of justice.
Richard Watt's girlfriend, Nichola Roberts, 21, of Burfold Close, is charged with murder, familial homicide and perverting the course of justice.
Natasha Oldfield, 29, of Chertsey Close, who is the girlfriend of James Watt, faces the same charges as Ms Roberts.