Police have made a fresh appeal for witnesses after an 11-year-old boy was sexually assaulted in Wendover last month.
A 43-year-old man from the Bicester area was arrested in connection with the incident but later released without charge.
The boy was attacked at about 4.40pm on December 13 as he walked along Bacombe Lane, close to a bridleway.
A man approached the boy and spoke to him before sexually assaulting him.
The child was able to run away and was not injured in the attack.
Police say the man was wearing a ‘very distinctive’ grey and black diamond-patterned hooded top.
Investigations have been ongoing since the incident and police patrols have been taking place in the area.
The man police are looking for is white, aged around 40 with stubble on his face.
He was wearing the hooded top, dark blue jeans and black shoes.
Det Sgt Kerry Bradfield said: “I am re-appealing for anyone who saw a man matching this description or anyone who has seen someone acting suspiciously in this area to contact police.
“The offender was wearing a very distinctive top so I am appealing for anyone who knows anyone with a top which has a diamond pattern matching this description to come forward.
“Incidents of this nature are extremely rare and we are continuing to investigate thoroughly.”
Anyone with information about the incident should call police on 101 or Crimestoppers anonymously on 0800 555 111.