A woman who lied to Buckinghamshire detectives claiming she was raped, has been cautioned by police.
The 20-year-old reported being attacked in High Wycombe in the early hours of Sunday.
But following an investigation detectives found the incident had never taken place.
The woman was arrested on suspicion of wasting police time on Tuesday and after admitting making up the attack was cautioned by officers.
Det Ch Insp Rebecca Mears from Thames Valley Police said: "Stranger rapes are very rare and all such allegations are taken extremely seriously.
"All calls to the police are treated as genuine unless proven otherwise but we will not hesitate to prosecute people who make false allegations.
"Not only do false rape allegations cost a great deal of public money, but they result in officers having less time to investigate real crimes."