Police investigating a robbery in South Tyneside believe the suspect made off in a vehicle driven by a second man.
Officers received a report at around 11.30am that a man armed with what is believed to be a firearm went into Whitburn Post Office at North Guards in Whitburn.
It's not known whether it was real or imitation at this stage.
He made off with a mobile phone, leaving staff unhurt but shaken.
It's believed the suspect got into a small black car outside the Post Office, driven by a second man, which drove off along North Guards towards Cleadon Lane.
Anyone with information should contact police on 101 or Crimestoppers anonymously, on 0800 555 111.
More top news
A mum-of-three from Newcastle has been shortlisted for the 'High Profile Working Parent of the Year' award
A look ahead at the weekend forecast for the Tyne Tees region.
After the North East voted in favour of Brexit, Paul Brand looks at what impact the result might have on the region's political landscape