Detectives are looking to find a man who racially abused a 50-year-old Eastern European woman on an Essex bound train.
The woman, from Maldon, boarded the 6.32pm service to Walton at Liverpool Street, on December 7, when a man sat opposite her and began swearing loudly whilst having a conversation on his mobile phone.
She suggested the man stop swearing, before he launched into a tirade of racist abuse towards the woman, which continued for 20 minutes.
The man also made threats to other passengers on the train who were watching the incident, before he left the service at Kelvedon.
Officers have conducted several lines of enquiry, including reviewing CCTV footage and have since identified a man they believe has key information about the incident.
Detectives from British Transport Police (BTP) want to identify a man they would like to speak to in connection with the incident.
Detective Constable, Alan Reed said: "This kind of behaviour is totally unacceptable and we are determined to find the person responsible.
"We would encourage anyone who recognises the man in the picture, or knows his whereabouts to get in touch.
"I would also like to appeal to anyone who was on the train at the time and witnessed the incident to come forward."
Anyone with information should contact British Transport Police on Freefone 0800 40 50 40 quoting reference B7/LNA of 09/01/2013, or call Crimestoppers on 0800 555 11.
The woman, from Maldon, boarded the 6.32pm service to Walton at Liverpool Street, on December 7, when a man sat opposite her and began swearing loudly whilst having a conversation on his mobile phone.
She suggested the man stop swearing, before he launched into a tirade of racist abuse towards the woman, which continued for 20 minutes.
The man also made threats to other passengers on the train who were watching the incident, before he left the service at Kelvedon.
Officers have conducted several lines of enquiry, including reviewing CCTV footage and have since identified a man they believe has key information about the incident.
Detectives from British Transport Police (BTP) want to identify a man they would like to speak to in connection with the incident.
Detective Constable, Alan Reed said: "This kind of behaviour is totally unacceptable and we are determined to find the person responsible.
"We would encourage anyone who recognises the man in the picture, or knows his whereabouts to get in touch.
"I would also like to appeal to anyone who was on the train at the time and witnessed the incident to come forward."
Anyone with information should contact British Transport Police on Freefone 0800 40 50 40 quoting reference B7/LNA of 09/01/2013, or call Crimestoppers on 0800 555 11.