A 40-year-old woman arrested on suspicion of attempted burglary in Battersea, south London, remains in police custody.
The arrest at 14:15hrs on Wednesday, 13 September, relates to an incident at Thomas' Battersea School on Tuesday, 12 September when an individual gained access to its premises.
The woman was arrested in the vicinity of the school and has been taken to a south London police station where she remains in custody.
We are working with the school, which is attended by His Royal Highness Prince George, to review its security arrangements after the incident.
Police were alerted and officers attended immediately after the issue came to light.
Police are part of the protective security arrangements for the Prince and we will continue to work closely with the school, which is responsible for building security on its site.