Nicholas Prosper, of Leabank, Luton, was arrested on Friday morning in Bramingham Road after police discovered three bodies at a flat in Leabank, off Wauluds Bank Drive, at around 5.30am. The victims are believed to be Juliana Prosper, 48, Kyle Prosper, 16, and Giselle Prosper, 13, although formal identification has yet to take place. Prosper was also charged with "a number of firearms offences", police said.

Nicholas Prosper, of Leabank, Luton, was arrested on Friday morning in Bramingham Road after police discovered three bodies at a flat in Leabank, off Wauluds Bank Drive, at around 5.30am.