Two police forces are mourning the loss of one of their own, with former Northern Territory commissioner and South Australian assistant commissioner Paul White killed in a cycling accident.
Mr White, 72, died at the scene following a collision involving a vehicle in Adelaide's southeast on Sunday morning.
Police and ambulance crews were called to an intersection in Glen Osmond shortly before 10.30am following reports of the crash.
A 61-year-old man behind the wheel of the vehicle was on Sunday afternoon assisting with investigations of the circumstances leading up to the incident.
His car was towed away for examination, police said.
Mr Smith's death was confirmed by acting NT commissioner Murray Smalpage.
"It is with great sadness we advise the death of former Northern Territory Police Commissioner and Chief Executive Officer, Northern Territory Police, Fire and Emergency Services, Mr Paul White," he said in a statement.
Mr White retired from the NT force in 2009, following almost eight years as top cop.
He joined SA Police as a cadet in 1968 and rose through the ranks to the position of assistant commissioner before his departure.
Mr White was, during this period, in charge of the state's crime command and responsible for efforts to tackle the bikie gang scourge.
SA Emergency Services Minister Joe Szakacs said the loss felt by the police community any time one of their current or former members passes was real and profound.
"My and the government's condolences are with his family, loved ones and the entire police fraternity," he said.
"He made an extraordinary contribution to policing, not just in South Australia but in the Northern Territory as well."
The minister said cycling safety was important and it was the responsibility of all road users to keep each other safe.
"We must treat every death on our roads as preventable," he said.
Police said investigations into the crash were ongoing and asked for anyone who witnessed the incident or with dashcam footage to come forward.