A 74-year-old Lincoln man has been arrested on suspicion of failing to stop after a collision.
Two young men were been taken to Lincoln County Hospital after a reported hit-and-run in Riseholme.
A car hit the men in Riseholme Lane, just outside of Lincoln, at 4.57pm. The driver then left the scene.
The men are now being treated - one has a serious head injury.
The pensioner has been released on police bail pending further enquiries until December 18.
Anyone with any information is asked to call the non-emergency number 101, quoting incident number 288 of November 6.
Riseholme Lane was closed overnight and will be into the morning from the A15 east to west to the fork at Hall Lane junction while police investigations continue.