He stole £300 from the till in the Co-op on London Road, after threatening a staff member.
Dorset Armed Robbery: CCTV Image Released
Detectives investigating an armed robbery in Dorset have released a CCTV image of a potential witness they want to speak too.
A man entered the Post Office on Lymington Road in Highcliffe, demanded money and left with a quantity of cash, at around 9.30am on Tuesday 18 December 2012.
He was in possession of what is believed to be a firearm. No-one was injured as a result of the robbery.
Detective Constable Kate Dennis, of Bournemouth CID, said: "This was an extremely distressing incident and the victims were understandably shocked as a result of this man's actions.
"Following extensive enquiries I am now able to release a further CCTV image. The pictured man is a possible witness.
"I would like to trace the man pictured as we believe he entered the shop shortly after the offender had committed this offence.
It's believed this potential witness indicated to the victim that the offender had run off onto the main road.
"I am very keen to speak with this man as he may have valuable information that can assist us in our investigation.
"I am also keen to hear from anyone who may have seen any suspicious vehicles or anyone acting suspiciously in the area prior to 9.30am."
Witnesses and anyone with information should call Dorset Police in confidence on 101 quoting incident number 18:102. Alternatively, call the free and anonymous Crimestoppers line on 0800 555 111 where mobile phone
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