No further police action will be taken against three men arrested after an investigation into an Islamic school for girls in Lancashire.
Two men arrested on suspicion of sexual assault and false imprisonment have been released from their bail without charge, police said.
A third man arrested on suspicion of false imprisonment at the school in Lancaster has also been released without charge.
Police were called to the Jamea Al Kauthar school to investigate claims of sexual assault and false imprisonment.
Detectives executed a search warrant and arrested the three men earlier this month.
Police said no further action will be taken as "none of the conduct disclosed ... meets the threshold for criminal prosecution".