A woman had her handbag and mobile phone stolen while she was suffering an asthma attack at a railway station.
The victim was waiting for a taxi at Warwick railway station on Tuesday night when a man asked if he could share her cab.
When she collapsed to the floor, he picked up her bag and phone and then ran off.
He is described as white, tall and was wearing a beige-coloured top. Warwick police are appealing for witnesses.
The incident happened between 2300 BST and midnight.