A girl has been left with "life-altering injuries" after she was hit by a car in Gregory Boulevard.
The incident is being treated as "a serious collision" after the road was cordoned off from 2.30pm until around 4.25pm on Friday, April 19.
Police said two children, whose ages have not been given, were taken to hospital after being hit by a car at the junction with Alfreton Road .
No arrests have been made.
Police are appealing for witnesses and dash cam footage to determine what has happened.
A Nottinghamshire Police spokesman said: "Injuries to one of the girls are potentially life-altering but neither have injuries which are likely to be life-threatening.
"Police are still investigating, so any witnesses or dash cam footage would be appreciated.
"People can call 101 with any information, quoting incident number 446 of 19 April when they call."
Get the most important news straight in your inbox before 9am every day - sign up to Nottinghamshire Live's newsletter. No complicated forms to fill out, just enter your email address in the black box at the top of this page.
Neighbour in his pyjamas armed with torch saves elderly couple's home from burning to the ground
Police chased after a stolen vehicle which then crashed in Porchester Road
Man dies after vehicle involved in crash with cars and pedestrian
