Melanie Hall murder timeline
25 November 2013
A man is arrested on suspicion of the murder of Melanie Hall, whose remains were found next to the M5 in 2009.
3 October 2013
Police investigating the murder of Ms Hall find a car, which they say may be a "significant line of inquiry".
26 November 2010
Police decide not to charge two men arrested on suspicion of murder.
5 October 2010
The father of Miss Hall appeals for those closest to her killers to come forward.
1 September 2010
Police investigating the murder of Miss Hall bail a 39-year-old man.
31 August 2010
Police arrest a 39-year-old man in connection with the inquiry.
8 July 2010
Police reveal a suspect they detained was questioned by officers when Miss Hall disappeared in 1996.
2 July 2010
A man arrested on suspicion of her murder, is released on bail.
1 July 2010
Police investigating the murder arrest a 38-year-old man.
6 April 2010
Pictures are released of clothes similar to those worn by Melanie Hall that were found beside the M5 six months after she disappeared.
11 December 2009
The funeral of Melanie Hall takes place in Bath - 13 years after she went missing.
29 October 2009
A TV appeal made by detectives prompts 200 calls about the case.
28 October 2009
A set of three Ford car keys are discovered close to the body of Miss Hall, just off the M5 motorway.
13 October 2009
Detectives investigating Miss Hall's murder reveal she had suffered "blunt force" injuries to her head.
9 October 2009
A man arrested on suspicion of murder after Miss Hall's remains were found near the M5, is ruled out as a suspect.
8 October 2009
Melanie Hall's father calls on those responsible for their daughter's death to have the "moral fibre" to give themselves up.
8 October 2009
Jewellery buried with human remains found on a motorway sliproad near Bristol help identify them as Miss Hall, 13 years after she disappeared.
7 October 2009
Bones found by the side of the M5 motorway in South Gloucestershire are those of a woman who has been missing since 1996.
7 October 2009
The disappearance of hospital worker Melanie Hall, whose remains were found in a bag next to the M5, prompts a major missing persons inquiry.
9 June 2006
The parents of a woman who went missing 10 years ago have use the anniversary to make another appeal for information.
17 November 2004
A coroner records an open verdict on the death of Miss Hall, who disappeared from a Bath nightclub in 1996.
15 August 2003
Two men who were arrested in March over the disappearance of Bath hospital worker Melanie Hall are released without charge.
9 May 2003
Detectives admit a high-profile investigation into the disappearance of Bath hospital worker Melanie Hall may come to nothing.
27 March 2003
Police investigating Miss Hall's disappearance complete a search of farmland near Bath.
13 March 2003
Police investigating the 1996 disappearance of Miss Hall search several sites in the Bath area, following the arrest of two men in connection with the case.
12 March 2003
Two men are arrested in connection with the case.
2 August 1999
Police divers conduct a river search for a young woman who went missing after leaving a Bath nightclub more than three years ago.
5 November 1996
A reconstruction of Miss Hall's last known movements is shown on the BBC's Crimewatch programme.
17 June 1996
Her boyfriend speaks of his sorrow at her disappearance while police begin a search of the River Avon in Bath.
10 June 1996
Miss Hall fails to turn up at work and a missing persons inquiry is launched.
9 June 1996
Miss Hall is last seen sitting on a stool on the edge of the dance floor, at Cadillacs nightclub in Bath, just before at 01:15 BST.