Detectives are appealing for witnesses to a serious assault on a man in Crawley.
Emergency services attended Broadfield Barton around 6.45pm on Wednesday (January 3) after a man in his 30s was found with a head injury.
He was taken to hospital, where he remains in a serious condition.
An investigation was launched and enquiries, including house-to-house visits and CCTV checks, have been ongoing.
Police say the public should expect to see an increased, visible police presence in the area as this continues.
Investigating officers would like to speak to anyone who saw what happened, or who may have any other information relating to the assault. They would particularly like to hear from anyone who may have captured relevant CCTV, doorbell or dash cam footage from the area.
Any witnesses or those with information are asked to contact police online or by calling 101 quoting Operation Eastbrook.