British Transport Police (BTP) have released a CCTV image after two high value bikes were stolen at Watford Junction station in Hertfordshire.
The offence happened on Wednesday 11 January.
A man is alleged to have stolen two bicycles from the bike racks.
BTP added by their website: “Officers would like to speak to the man in the image who may have information that could help their investigation.
“Anyone who knows him is asked to contact British Transport Police by texting 61016 or by calling 0800 40 50 40.”
In both cases, people are asked to quote reference number 2300005639.