Sussex Police are appealing for witnesses and information following a head-on collision on the A272 between Piltdown and Newick.
The incident took place on Tuesday, 9 September at around 4.40pm.
It was reported that a black Audi A3 collided with a red Toyota Aygo in the opposite carriageway.
Both drivers were taken to hospital to be treated for their injuries.
Officers are pursuing a number of lines of enquiry in an ongoing investigation and would like to identify the driver of another vehicle that is believed to have been within close proximity to the incident but did not remain at the scene.
We also encourage anyone who witnessed the incident or who has relevant information such as CCTV, mobile or dashcam footage to report it to us.
Information can be reported by emailing collision.appeal@sussex.police.uk or by dialling 101 quoting serial 1018 of 09/09.
Cold weather health alert updated for the South East
HMV store in Eastbourne closes tomorrow
Huge crowds for Eastbourne's free New Year's Day Concert
Ashdown Radio Local Sports Preview
Snow & Ice forecast for East Sussex
Haywards Heath death: Man charged with manslaughter and in court today
New community cinema set for Heathfield
Christmas meals delivered to lonely locals