‘I had questions about Katie Simpson and I have questions here’Former police officer who investigated Katie Simpson's murder raises concern over unexplained death of woman in Monaghan canalA former police officer who investigated the murder of showjumper Katie Simpson has raised concerns over the unexplained death of a young woman found in a Monaghan canal. “I had questions about Katie Simpson autopsy photos and I have questions here,” Mr Brannigan said. Despite Creswell having abused Katie Simpson for many years, police initially treated the murder as suicide. Mr Brannigan had raised concerns about the original investigation and subsequently experienced obstacles as he tried to investigate the case. The Katie Trust assists families across the island of Ireland and beyond.