The Police Service of Northern Ireland has confirmed it is reviewing three cases recorded as suicide, following the Katie Simpson case.
A Police Ombudsman report into the death of the County Armagh showjumper found that the police investigation was flawed and failed her family.
The report said there had been “a general lack of investigative mindset”, which led to her death in 2020 being treated as suicide for several months.
Jonathan Creswell was later charged with her murder.
The possibility of other such cases was raised by political representatives at a Policing Board meeting at the start of September.
DUP Policing Board member Cheryl Brownlee told Good Morning Ulster on Wednesday: "It has been raised at the board a number of times about various cases that may have similar threads to the Katie Simpson case.
"We have reported those and the police are doing further investigations into that."
She added: "I think that’s very critical that if anybody feels that there was a failing to get in contact and to raise those concerns."