Police are hunting this suspected sex pest in relation to a woman being molested on a bus three years ago.
Officers from the Roads and Transport Policing Command wish to question 38 year-old Mohammed Salah Hassen Rabe.
The offence occurred on a route 148 bus in Shepherds Bush, west London on August 26, 2012, where the 34-year-old woman was sexually assaulted.
The photo of Rabe was taken in 2009 so his appearance may have changed and he may be using a different name.
Investigating officer Detective Constable Andy Barnard said: "We are keen to trace Rabe in connection with this incident. If anyone knows where he is please contact us.
"This incident happened almost three years ago but we remain committed to solving this case and have reviewed it several times to ensure all lines of enquiry are being explored."Anyone with information is asked to contact police on 0203 054 5406 or Crimestoppers anonymously on 0800 555 111.