A young mother killed when she was rammed off an e-bike in a hit-and-run crash has been named.
Alana Armstrong was riding pillion on one of two e-bikes that were being followed by a dark-coloured 4x4 at about 20:00 GMT on Tuesday.
The 25-year-old, mother to a six-year-old boy, died when the car struck one of the bikes in Batley Lane in Pleasley, while the rider - a man in his 20s - was taken to hospital. He has since had to have one of his legs amputated below the knee.
Derbyshire Police has launched a murder inquiry and a man and woman, previously arrested in connection with the incident, have been released without charge.