Sussex Police want to speak to Hove resident Arron Owston who they believe may have information about the stabbing of a 38 year old man in New Road near Pavilion Gardens over the weekend.
The victim has suffered potentially life-threatening injuries and is currently in an induced coma following surgery.
Detective Inspector Ian Still said: “We are keen to speak to anyone who saw what happened or who may have further information concerning this incident.
“We are also trying to trace Mr Owston, so would also appreciate his coming forward or hearing from anyone who has seen him recently or who may know where he is.”
Call Sussex Police online or call 101, quoting Operation Hillford or Crimestoppers anonymouslyon 0800 555 111.