A third woman has been arrested on suspicion of assaulting a resident at an Essex care home following an undercover Panorama investigation.
Last month's broadcast appeared to show residents being taunted, roughly handled and ignored at the Old Deanery in Braintree.
A woman in her 50s was arrested at her home and has been released on police bail until the end of July.
Two women, in their 30s and 40s, were arrested and bailed earlier this month.
Seven staff members have been sacked from the home since the BBC Panorama television broadcast on Wednesday, 30 April.