Detectives investigating the murder of a Saudi Arabian student in Essex have released an e-fit image of a man they would like to speak to.
Nahid Almanea, 31, was found with sixteen knife wounds on the Salary Brook Trail in Colchester, Essex, at around 10.40am on 17 June.
Police said the man pictured in the e-fit was seen running up Hewes Close, away from the Salary Brook Trail at 10.56am.
He is described as white, aged between 18 and 25, with dark red hair and was wearing a long-sleeve plain hooded top that is described as "London bus red" and dark trousers. The force said he had a piercing in his left eyebrow.
Ms Almanea has been described as an "exceptional" English language programme student at the University of Essex who was aiming to study at PhD level.
The charity Crimestoppers has put up a reward of up to £10,000 for information that would lead to the arrest and conviction of Ms Almanea's killer or killers.
Chief Inspector Richard Phillibrown, Colchester district commander, said: "We have received excellent support throughout this investigation from the whole community.
"We appreciate their patience whilst the forensic searches continue. We would also urge anyone with information, no matter how small you might think, to contact us."
Anyone with information should contact the force on 01245 282103 or Crimestoppers anonymously on 0800 555 111.
Additional reporting by Press Association