A notice of suspension has been placed outside Little Angels Nursery in Calne, Wiltshire.
The notice - which says the suspension runs for more than a month - is in place to allow the regulating body to investigate their 'belief that a child may be at risk of harm'.
A 37-year-old woman has been arrested in investigations at a nursery in Wiltshire.
Details about the inquiry have not been released, but police have confirmed that Little Angels Nursery in Calne has been closed.
The person arrested is understood not to be the owner.
Parents who have concerns are being advised to call either Social Services on 0845 6070888 or the Multi-Agency Safeguarding Hub (MASH) on 0300 456010899.
OFSTED’s first-ever South West annual report says the proportion of good or outstanding schools in the region has increased.
But it says that children from poorer backgrounds are not doing well enough.
Bradley Simmons is Regional Director for the South West at OFSTED.
He's been speaking to ITV West Country's Ian Axton.
He told him that in more affluent areas, as well as in more economically deprived communities, pupils eligible for free school meals do not achieve as well as their peers.
Too many children and young people from poorer backgrounds in the South West are not doing well enough according to a report from Ofsted.
The report said despite the increase in 'good' or 'outstanding' schools in the region, pass rates of children from low income families are much lower than the national pass rates.
Dozens of angry parents are demanding answers tonight after a chain of children's nurseries in Swindon suddenly shutdown. It follows an investigation into how a child temporarily went missing from one of them.
The council - who had planned to withdraw funding following a critical Ofsted report - is now trying to find alternative places for more than a hundred children. Richard Payne reports.
Inspectors have found that the quality of education in Bristol varies, depending on where pupils live. Ofsted says improvements have been made, but the city council must do better after finding 'a widespread culture of mistrust and uncertainty' of the local authority in some schools.
Peter Lewis, Interim Director of Children's Services, Somerset County Council: