A pensioner has died 16 days after suffering a broken hip when she was mugged on her own doorstep.
Carole Mudie was pushed over as she returned from a night out in Birmingham and died in hospital last Tuesday.
West Midlands Police said a manslaughter investigation has been launched following the 68-year-old's death on the evening of Sunday, January 6.
The suspect stole a bag from Mrs Mudie as she walked from her car to her front door in Hawkesley at around 11.10pm.
Detective Sergeant Andy Bradley said: "We now really need the public's help as we progress this inquiry, following the tragic turn of events.
"A man is currently in custody on remand having been charged with separate matters and has been spoken to in relation to this offence.
"But what we desperately need is for anyone who witnessed the robbery of Carole Mudie to come forward.
"I'm keen to hear from anyone who saw what happened or who may have witnessed the offender fleeing the scene following the crime."
A post-mortem examination has taken place and officers are awaiting further test results to confirm the exact cause of Mrs Mudie's death.
In a statement released by police, her daughter Carey paid tribute to her as a selfless and happy woman with a great sense of humour.
The family statement read: "Our world has been blown apart and we can't believe that she has gone.
"The whole family is devastated that she has been taken from us in this way."
:: Anyone with information is urged to contact West Midlands Police on 101 or Crimestoppers on 0800 555 111.