On Tuesday November 19 police arrested a Bath man on suspicion of the murder of Melanie Hall.
The 44-year-old was arrested at his home in the city at around 8.30am and was questioned by detectives a police station in Bristol.
Melanie's parents Steve and Pat Hall were informed.
Police also searched a house in the Roundhill Park area of Twerton as part of the on-going investigation.
The man was released on bail on the evening of November 20.
More top news
"Our ability to pre-empt or respond to threats will be eroded if we don't keep up with our adversaries."
"You are one of the silence breakers and we all owe you a debt of gratitude."
Maximum temperature 11 C (52 F).