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.
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