A third man has been arrested on suspicion of murdering Adam Fanelli on a traveller site in Nash.
Addy McAllister, 33, from Bolsover in Derbyshire, was charged with one count of murder on Thursday.
Today, a 30-year-old man from Gloucestershire was arrested on suspicion of murder and is in police custody.
A 25-year-old woman was also arrested in Gloucestershire on suspicion of assisting an offender. She is also currently in police custody.
The arrests are in relation to the death of dad and scrap metal worker Mr Fanelli, aged 31.
His body was found at Nash Park in Winslow Road on March 17 and tests showed he died from head injuries.
Mr McAllister appeared at Milton Keynes Magistrates’ Court last week where he was remanded to appear at Luton Crown Court on June 26.
A 30-year-old man from Bolsover in Derbyshire, who was arrested on suspicion of murder on Tuesday last week, has been bailed until May 21.