A woman whose body was found near Sawley Marina on Sunday 5 April has been named.
Jennifer Key, 64, of South Yorkshire was discovered around 10.21pm in water off Warren Lane.
A 65-year-old man has been arrested in connection with the incident and has since been released on police bail pending further enquiries.
A post-mortem examination has been carried out and further tests are being conducted.
Detective Chief Inspector 1127 Mick Graham, who is leading the investigation, said; “We continue to investigate the circumstances surrounding the death and events leading up to it, our enquiries are ongoing and we would urge anyone who may have been at the marina between 11pm Saturday 4 April and 11pm Sunday 5 April and hasn’t yet spoken to the police to come forward.
“If you have any information which you believe may be able assist us the please get in touch and call 101, quoting incident 588 of April 5.”