Police are investigating a number of disability care homes in West Sussex following the deaths of 12 residents.
Two homes in Horsham, run by Sussex Health Care, have been identified by the Care Quality Commission as homes with "significant safeguarding concerns".
The two homes are The Laurels in Guildford Road and Orchard Lodge in Dorking Road.
Sussex Police says the investigation still remains at an early stage and no arrests have been made at this time.
Sussex Health Care says it is working with police, the council and is speaking to residents and relatives.
Nadra Ahmed, National Care Association