Police have released CCTV which was taken shortly before a shop worker killed his boss.
The footage shows an innocent shop-worker going to investigate after hearing a noise from upstairs.
The CCTV then shows the defendant running out of the shop after him.
Thilak Mohan-Raj was found guilty of murdering Vairamuthu Thiyagarajah after he was caught stealing the takings from a convenience store in Bedford.
More top news
Showers easing with clear spells overnight. Strong winds easing.
Sunday forecast: Heavy rain is expected for a time with gusty winds, then clearing during the afternoon.
March in the Anglia region has been much drier and sunnier than normal although temperatures have been around average.