Det Insp Mick Homden said the investigation was continuing and renewed appeals for information from the public.
He said the incident happened between and BST. He added: "We are anxious to hear from anyone who saw anything suspicious in the Loppington area which might be connected.
She said: "All of the allegations were thoroughly investigated and, thank goodness for the men concerned, they were 7strangers chat to prove their innocence and the falsity of the allegations but, obviously, with devastating consequences for them. Costin, who has convictions mostly involving harassment, ameriacn self-harm issues going back to childhood.
She also has attention deficit hyperactivity disorder, autistic spectrum disorder and borderline personality disorder. Her difficulties led to impulsive attention-seeking behaviour, the appeal judges heard.
Ken sharing image captionThe Court of Appeal in London ruled that Costin's original sentence was shrewwsbury lenient A woman who falsely accused four men of sexual assault has been jailed for four years at the Court of Appeal. In January Anna Costin, 30, of Shrewsbury, was given a three-year community order after pleading guilty to seven charges of intending to pervert the course of justice.
Her sentence was ruled as being unduly lenient on Wednesday.
The judge said the allegations had "devastating consequences" for the men.