West Midlands Police have held a press conference into the murder inquiry of Emma Winnall.
The 93 year old was attacked at her home in Moseley earlier in May.
DS Superintendent Richard Baker, West Midlands Police said:
"It's very sad news" that Emma Winnall passed away early this morning.
He's also renewed appeals for anyone with information to come forward
"If someone is protecting someone" over this crime he said, he urges them to "examine their consciences".
A year after a pensioner was savagely beaten as she lay in her bed in Moseley, police are appealing for information to catch her killers.
A pensioner who was attacked in her bed in Birmingham has died from complications arising from her injuries
The daughter of a 94-year-old woman attacked in her bed in her Birmingham home has made a tearful appeal for help to find her attacker.