A 30-year-old man who was arrested on suspicion of assisting an offender in connection with the Ifield murder has been released on bail.
The man from London has been released on bail until April 15.
Detectives launched a murder investigation after the body of Janet Müller was discovered in a burning Volkswagen Jetta car in Rusper Road, Ifield, near Crawley on Friday, March 13, shortly after 2.30pm.
Christopher Jeffrey-Shaw, 26, of Lakeside, Beckenham, London, is accused of killing Janet, a 21-year-old student from Eastbourne and has been charged with her murder.
He has been remanded in custody to appear at Guildford Crown Court on April 9.
Detective Chief Inspector Karen Mizzi from the Surrey and Sussex Major Crime Team said: “I am still appealing for information from anyone who may have seen Janet on Thursday night (March 12). She was last seen at Mill View Hospital, Nevill Avenue, Hove, at 10pm.
“If anyone saw her leaving the hospital or walking in the area, we need to hear from you.”
“Miss Müller was of mixed race, slim and 5′ 7′ with shoulder length dark brown afro hair and brown eyes. She was wearing dark clothing.
“Also if anyone saw a Volkswagen Jetta car being driven in Rusper Road, Ifield, or in the area, on Friday (13 March) or anyone acting suspiciously in the area we need to hear from them.”
Anyone with information is urged to contact Sussex Police on 101 or email email@example.com quoting Operation Madeira or call the independent charity Crimestoppers anonymously on 0800 555111.