Police have released a CCTV image after a man allegedly fondled himself in front of a woman on a train that travels through Elstree & Borehamwood.
A woman was reportedly followed onto a Thameslink service travelling between West Hampstead and Bedford at around 9.15pm on August 30.
He then allegedly fondled himself in front of her.
The previous day, a similar incident involving a different female victim happened on a train from East Croydon to London Bridge, the British Transport Police said.
Officers are linking the two and have now released a CCTV image of a man they want to speak to in connection with the investigation.
A BTP spokesperson urged anyone who recognises the man to contact police by texting 61016 or calling 0800 405040 quoting reference 2200088600.
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