Convicted murderer Christopher Docherty-Puncheon guilty of Lieutenant Colonel Robert murder

Lieutenant Colonel Robert 'Riley' Workman was killed on his doorstep in Furneux Pelham (PA)

A convicted murderer was found guilty of gunning down a retired army officer in cold blood today.

Christopher Docherty-Puncheon, 33, shot Lieutenant Colonel Robert "Riley" Workman, 83, on his doorstep in Furneux Pelham, Hertfordshire, in an "execution-style" killing in 2004.

Docherty-Puncheon, from nearby Stocking Pelham, denied murdering his former employer Lt Col Workman but jurors at St Albans Crown Court found him guilty following a four-week trial.

PA