An elderly National Express passenger picked up the wrong suitcase when he got off the coach in Dumfries - not realising it was packed with £6,500 worth of drugs.
Now police have taken to social media to jokingly appeal for the its real owner to visit their station to claim his suitcase.
Their Facebook post read: "Did you misplace a suitcase with £6,500 worth of drugs in it? Great news, it's been found and we have it at Dumfries Police Station.
"Just pop in, tell us what's inside it, where you left it and we will be happy to return it to you.”
But they added: "You will be arrested and will only get the empty case back after the court case."
The bizarre mix-up, worthy of a TV drama, happened when the National Express bus travelling from London to Belfast arrived at the Whitesands arrived in Dumfries on Tuesday morning.
First up to collect his case was an elder man who realised he had picked up the wrong case when he got it home. Oblivious to its contents he later handed it in at the local Tourism Information Centre.
Meanwhile, bus station staff say a man appeared there to ask about a missing case. They said they did not have it and referred him to the police station, but perhaps understandably he has failed to follow up on their suggestion.
Back at the tourist office staff noticed a strange smell coming from the suitcase and took it to police. They couldn’t believe their luck when they found it contained drugs worth about £6,500.
PC Alistair Hope said: "We have reports of a young man, described as being in his mid 20s, fair hair, wearing jeans and a horizontally striped fawn coloured top with a Scottish accent making enquiries in the area of the Whitesands in Dumfries about his missing suitcase.
"We would like to identify this man in relation to this investigation.
"Anyone who may have been in or around the Whitesands on Tuesday morning is asked to call us at Dumfries on the 101 number if they can help us identify this man."