Emma Winnall's son and daughter previously made an emotional appeal for information about their mother's attack Credit: Rui Vieira/PA Wire
Police say that given the extent of Mrs Winnall's injuries, her age and her vulnerability, their investigation had always been treated with the same level of seriousness as a murder inquiry.
Officers managed to speak to the 93-year-old in hospital in the days following her attack.
West Midlands Police have appealed again for information following the death of pensioner Emma Winnall nearly a month after she was attacked at her home in Birmingham.
Superintendent Richard Baker, Head of Major Crime at the force, renewed their appeal in what has now become a murder inquiry.
This is desperately sad news. Our condolences go out to Emma's family and friends.
This was a shocking attack on a defenceless, elderly woman as she slept in her own bed.
No-one capable of carrying out such a despicable attack deserves protecting - I'm asking people to look into their consciences and if they have any suspicions about who may be responsible to contact police.
Arrests after attack on 93-year-old widow in her bed
Detectives investigating the attack of 93-year-old Emma Winnall have arrested two people.
A 56-year-old woman and a 28-year-old man were arrested at their home in the Hall Green area of Birmingham just before 6.30am, on suspicion of assault.
Emma Winnall Credit: Police handout
The pair were taken to a police station in the West Midlands where they remain in police custody.
Mrs Winnal was attacked in her bed overnight between Monday 30 April and Tuesday 1 May and was left with a fractured skull, a broken arm and wrist, partially severed finger and other multiple injuries, following the attack at her home in Birmingham.
Police ask people to look into their consciences after attack
I would like to thank Crimestoppers for offering this reward and say again that local people hold the key to finding who is responsible for this terrible attack.
If you believe that you have any piece of information that may help our inquiries, I would ask you to call us or Crimestoppers as soon as possible.
This was a shocking attack on a defenceless, elderly woman as she slept in her own bed. No-one capable of carrying out such a despicable attack deserves protecting – I'm asking people to look into their consciences and if they have any suspicions about who may be responsible to contact police.
– West Midlands Police Detective Chief Inspector Sab Johal
A reward of up to £5,000 has been offered for information regarding the attack on 94-year-old Emma Winnall from Birmingham.
Crime-fighting charity Crimestoppers has put up the reward for information leading to the arrest and conviction of those responsible for the attack.
Emma Winnall was assaulted in her bed at her Moseley home. Credit: Police handout
Mrs Winnall suffered horrific injuries including a fractured skull and a partially severed finger after being badly beaten overnight last Monday night (30 April) into Tuesday morning in her home in Pensby Close, Moseley. She remains in a critical but stable condition in hospital.