Detectives have named a pensioner who died in hospital days after being found with injuries at his Kings Heath home.
A murder investigation was launched following the death of 69-year-old Robert Morrison, who was a wheelchair user, on Sunday 16 December.
He informed neighbours that he had been assaulted and robbed in his home in Grove Road at around 11.30pm on 10 December.
A postmortem has been conducted and the findings are inconclusive pending further investigation.
Two men, both aged 18, have been charged with robbery and have been remanded in custody ahead of a further court appearance on 16 January 2019.
Enquiries continue and anyone with information can contact police via Live Chat on the West Midlands Police website between 8am to midnight, call Detective Inspector Hines on 101 or contact Crimestoppers anonymously on 0800 555 111.