A 72-year-old shopkeeper arrested on suspicion of murder after the stabbing of a suspected armed robber has been released on bail.
Gary Mullings, 30, died in hospital following the incident at a florist's in Greater Manchester on Tuesday.
Cecil Coley, who runs the shop in Shrewsbury Street, Old Trafford, was also taken to hospital and then arrested.
He has been bailed until 9 September, pending further inquiries.
A post-mortem examination found Mr Mullings, from New Moston in Manchester, died from stab wounds.
Another man, aged 18, is receiving hospital treatment for stab wounds. He has been arrested on suspicion of robbery.
It is understood Mr Mullings was acquitted, in January 2002, of the murder of Alan Byron, 18, who was shot dead in a car in Longsight a year earlier. Another man was convicted and jailed for life.