"Widespread and significant shortfalls" at a care home for people with learning disabilities and autism have seen it banned from accepting new residents.
Boundary House in Felthorpe, near Norwich, has been rated as inadequate by the Care Quality Commission for the second inspection in a row.
It has seen the regulator impose a ban on the home from accepting any new residents, unless special permission is granted by the CQC.
It comes following an inspection in January which saw a number of concerns about how the home - which currently has 10 residents - was being run.
Concerns centred around the home not providing the level of support its vulnerable residents needed and safeguarding fears as a result.
Inspectors found residents with unexplained bruises, safety doors left unsecured and medicines stored at incorrect temperatures.
Inspectors also said they witnessed one resident, who requires one-to-one supervision throughout the day, leave the home in the dark and walk around the car park.
It is the second time in a row the home has been rated as inadequate.
The report, published earlier this month, reads: "People were not supported to manage risks to themselves and from the environment.
"This placed people at risk of harm.
"We were not assured that people received the correct level of one-to-one staff support.
"People were not always supported by the correct staff and this caused them distress."
The CQC has subsequently said the home is unable to accept any new residents unless special permission is granted.
The report adds: "Staff told us they were concerned that staff were leaving due to low morale.
"Relatives also commented on staff changes which impacted effective communication.
"Staff were not provided with effective support and training to carry out their roles and the tasks delegated to them."
New Boundaries, which runs the care home, has not responded to a request for comment on the report's findings.
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