A police investigation into allegations of sexual assault at a children's nursery has widened after a suspect was arrested over abuse claims against a second youngster.
West Mercia Police said four men answered bail in relation to their ongoing investigation into an alleged incident against a child, involving the premises of Bright Eyes Nurseries in Worcestershire, in May.
A force spokesman said one of those men was further arrested regarding "an additional sexual offence against a different child" in connection with the inquiry into the nurseries' three sites in Redditch, Bromsgrove and Droitwich. He remains in custody.
The investigation was first sparked after the mother of a child who attends the nursery reported an incident.
All the nurseries were voluntarily closed by the management, and have since been searched by officers together with three other properties.
Ofsted has also suspended the nurseries' registration while the investigation continues.
Detective Inspector James Hopkins said: "We can confirm that the four men who remain on bail as part of this investigation have today been rebailed pending further police enquiries into the offences they were arrested for.
"However, one of the four men was arrested when he answered his bail this morning and is being questioned on suspicion of an additional sexual offence against a different child. This man remains in custody at the present time.
"I would like to reassure people that a team of dedicated detectives are continuing to investigate all matters relating to this enquiry, while I can also confirm that we have made contact with the parents of children who attend the three Bright Eyes Nursery premises to make them aware of this latest development."
Two men initially arrested as part of the investigation were released from bail without charge in June.