Police colleagues have paid tribute to a "popular and funny" officer who died in a crash.
PC Matt Lannie was on duty when his marked police motorbike collided with a blue Toyota Avensis in Eccelesfield, Sheffield on Tuesday.
The 40-year-old was pronounced dead shortly after the crash at about 1pm.
Prior to his death he had been responding to reports of a car failing to stop.
Chief Constable Stephen Watson has paid tribute to his colleague.
“It is with great sadness that we today pay tribute to serving officer, PC Matt Lannie, who died in the line of duty," he said.
"Dreadful events such as these serve to remind us of the great dangers that police officers confront every day in order to keep us all safe.
“Matt was a specialist motorcycle officer in our roads policing unit and prior to this was a response officer at Sheffield. He was a very popular member of the team and he will be greatly missed.
“The South Yorkshire police family is doing everything we can to provide support and comfort to Matt’s loved ones and his colleagues at what is a very difficult time.
“Matt’s family has asked for privacy and we ask their wishes are respected in order to allow them the time and space they so richly deserve.”
Steve Kent, of South Yorkshire Police Federation, said he was "a friend to many" on the force and "loved his job in the roads policing group".
Home Secretary Pritti Patel also sent her regards to the officer.
On Wednesday she tweeted: "The saddest news. Deeply tragic and my thoughts are with the family of this distinguished officer."
The driver of the Toyota, a 59-year-old man, was taken to hospital with minor injuries.
South Yorkshire Police Federation has appealed for witnesses and anyone with CCTV or dashcam footage to come forward.
