A female nursery worker has been charged with seven offences including making and distributing indecent images of children and sexual assault.
Vanessa George, 39, from Plymouth, Devon, worked at the Little Ted's nursery in Laira.
George, from Efford, remains in custody at Charles Cross police station in Plymouth and will appear at Plymouth Magistrates' Court on Thursday.
She faces two counts of sexual assault by penetration, two counts of sexual assault by touching, and three further counts of making, possessing and distributing indecent images of children.
The nursery, which operates from an adjoining school and church, remains closed.
Little Ted's operates from Laira Green Primary School and Laira United Church Hall.
Children are aged between two and five, but youngsters up to 11 can attend breakfast and after-school clubs.