Ian McLoughlin, who today admitted to the murder of a pensioner, said in a police interview he was "sorry" for the killing but did not regret the initial robbery.
McLoughlin, 55, who will be sentenced this afternoon, had met convicted paedophile Francis Cory-Wright in prison and turned up to his house claiming to need help setting up a charity supporting elderly ex-offenders.
But the 55-year-old, already a convicted killer, grabbed Mr Cory-Wright and demanded to know where he kept his "gold and silver".
The convicted paedophile, who was jailed for 30 months in 2011 for indecently assaulting a 10-year old boy in the 1970s, was tied to his bed and McLoughlin put silver family heirlooms into a pillowcase and demanded his bank cards and pin numbers.
Father-of-three Graham Buck, who lived two doors away from Mr Cory-Wright, went to help him after hearing shouting in his front garden.
McLoughlin said he was confronted by Mr Buck as he tried to flee the house and stabbed him.
More top news
Kim Dick spoke about her fears as she comforted a young Manchester Arena victim as she waited anxiously for news of her own family.
"Nobody does it better", the current James Bond Daniel Craig said in a tribute to his predecessor.
Thousands of troops could be sent out to protect key sites and events after the Manchester attack. Here's everything you need to know.