British Transport Police (BTP) have released CCTV images in the search for a man linked with a number of sex offences on the railway network in south London.
Images of a man wearing a hooded top and trainers were released by BTP on Friday afternoon (September 24) as they appealed for help with their investigation into the incidents.
The first reportedly took place on a train between Orpington and Brixton on the morning of Monday, August 23.
BTP said the suspect "exposed and touched himself inappropriately".
"The same man is also reported to have committed sexual offences at Sydenham Hill railway station the following morning (24 August)," a BTP spokesperson added.
The transport law enforcement are now seeking the man shown in the pictures as their investigation into the offences continues.
Anyone with any information related to the case is asked to contact BTP by texting 61016 or calling 0800 40 50 40 quoting reference 2100062814.
Alternatively, you can call Crimestoppers anonymously on 0800 555 111.