Four men who were being quizzed about the robbery of a 77-year-old woman at her home in Manchester Road, Bradford, have been freed from custody.
Two 37-year-old men from Bradford have been released on bail and two men, aged 18 and 19, also from Bradford, were released without charge.
The victim remains in hospital in a stable condition after suffering breathing difficulties following the robbery.
Witnesses, or anyone with information, should contact Bradford CID on 101.
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