A police motorcyclist has died in a crash while on duty.
The officer's marked bike was in collision with a blue Toyota Avensis on Nether Lane in Ecclesfield, Sheffield, at about 13:00 BST on Tuesday.
The 40-year-old officer, who had been responding to reports of a silver BMW failing to stop, was pronounced dead at the scene, South Yorkshire Police said.
The driver of the Toyota, a 59-year-old man, was taken to hospital with minor injuries.
Reacting to the news on Twitter, Home Secretary Priti Patel posted: "The saddest news. Deeply tragic and my thoughts are with the family of this distinguished officer."
The saddest news. Deeply tragic & my thoughts are with the family of this distinguished officer. https://t.co/nflnzAgigp— Priti Patel #StayHomeSaveLives (@patel4witham) April 21, 2020
Other police forces also paid tribute to the officer.
In a tweet, Cheshire Police said: "All of our thoughts are with the officer's family, friends and colleagues at South Yorkshire Police at this time."
The Metropolitan Police Federation tweeted: "Very sad news as South Yorkshire Police tonight confirm the on-duty death of an officer. Our thoughts are with the officer's family, friends and colleagues."
Police have appealed for witnesses, or anyone who has information about the crash, to contact 101.
Dashcam or CCTV footage that might assist can be sent to firstname.lastname@example.org.