A 66-year-old man has been charged with the murders of a father and son who were shot dead in two Cambridgeshire villages.
Stephen Alderton, of no fixed address, was arrested on Thursday.
He was also charged with one count of possession of a firearm.
Two others, a man, 27, and a woman, 33, have been released without charge.
It comes after father and son, named by police as builder Gary Dunmore, 57, and his 32-year-old son Joshua Dunmore, who also worked in the trade, were killed on Wednesday.
Police were called to reports of gunshots in Meridian Close, Bluntisham, just after 9pm, then to similar reports in Sutton at around 9.30pm.
The family of Gary and Joshua Dunmore said in a statement: “Gary was the most devoted son, brother, dad, and grandad, who gave everything for those he loved.
“He was a gentle and generous person who always put others before himself and he’ll be massively missed by his family and all those who knew and loved him.
“Josh was a devoted father and a loving uncle.
“He was a wonderful son and brother and leaves behind an extensive group of family and friends. He will be deeply missed and the devastation this has caused will never heal.
“We ask for privacy to mourn this loss at this incredibly difficult time.”