Armed robbers brandishing a knife and a gun struck at a post office in a leafy Sheffield suburb in daylight.
The raid took place at Parkhead Post Office on Ecclesall Road South at 9.40am on Monday.
It is the second time in six months the Parkhead Post Office has been targeted.
Two men, wearing motorcycle helmets and dark clothing, threatened staff before escaping on a motorbike with cash.
Temporary Detective Sergeant Luke Kiely, leading the investigation, said: “This robbery happened at a peak time on a busy road, and we would like to speak to anyone who may have seen the motorbike or the suspects.
“We’ve carried out detailed checks at the scene, and will continue our inquiries to trace the two men.”
A South Yorkshire Police spokeswoman said witnesses said the men had a large knife and small handgun.
They were wearing black or dark-coloured motorcycle clothing – and socks over their shoes.
The pair fled on a black motorbike down Ecclesall Road towards the city centre before turning right onto Dobcroft Road, Millhouses.
Nobody was injured during the robbery.
In March a gun-wielding robber burst into the store and demanded cash. No-one has been caught.
A Post Office spokeswoman said yesterday: “I can confirm there was an attempted robbery at Parkhead Post Office on September 23.
“The people who run our post office branches provide important services to local communities.
“Any robbery or attempted robbery is very traumatic for the victims and we will be supporting the police in their efforts to apprehend those responsible.
“We would urge anyone with information to contact the police.”
n Anyone with information is asked to contact police on 101 quoting incident number 244 of September 23, or ring Crimestoppers on 0800 555111.