A man presented a laceration to his neck at Crawley Hospital this morning (Thursday 4), prompting investigations into a suspected attempted murder.
Officers were called to the hospital at around 9.45am.
It's believed the attack took place in Ifield Road, Crawley, between 10pm on Wednesday and 9.45am on Thursday.
Anyone who witnessed anything suspicious in Ifield Road between these times or who has any information about the incident is urged to report online or call 101 quoting serial 309 of 04/02.