The PSNI has said its reviewing three cases it recorded as suicide following a critical report into its handling of a sudden death which turned out to be murder.
Earlier this week, Northern Ireland's Police Ombudsman issued a damning report into the case of Katie Simpson.
The 21-year-old showjumper was murdered by her sister's boyfriend in Derry in August 2020.
He tried to make it look like she had taken her own life and almost got away with it.
The PSNI treated Ms Simpson's case as suicide for months before concerns raised by family and friends prompted them to take another look.
It was eventually declared a murder inquiry and Jonathan Creswell was charged with beating and strangling Katie causing her death.
Creswell was found dead on the second day of his murder trial in April 2024.
The Police Ombudsman's Office found that officers had missed multiple red flags about Creswell's account including the fact that he had a previous conviction for assaulting a partner.
Police have developed a "misleading working assumption" that Ms Simpson's injuries had been self-inflicted.
The investigation had been flawed and the Simpson family had been failed, it said.
The PSNI accepted that it had been too trusting of Creswell's initial account of what had happened, and the investigation had not been rigorous enough.
It apologised to the family and three officers were sanctioned.
Now the PSNI has said it is reviewing a number of other sudden deaths.
In a one-line statement it said: "Following the Katie Simpson case, the Police Service of Northern Ireland is reviewing three cases recorded as suicide."
Alliance Policing Board member Nuala McAllister said she had given the Chief Constable a list of cases which she believed ought to be re-examined.
She said the names had been passed to her by police officers and family members.
Two complaints lodged with the police ombudsman in respect of the PSNI handling of the Katie Simpson case are still under investigation.
