The 90-year-old woman assaulted in Bath Street, Levin on 2 November has died, and a homicide investigation has been launched.
Three young women previously arrested in relation to this offending remain before the courts.
“The investigation is ongoing and we continue to make a number of enquiries," says Detective Senior Sergeant Craig Sheridan.
"The next stage of the investigation will be a post-mortem.”
ENDS
Issued by Police Media Centre