Update: The 30-year-old woman and 31-year-old man were bailed in the early hours of the morning on Monday, July 23.
A further 29-year-old woman has been released with no further action and the investigation into her death is continuing.
Two women and a man were arrested by police over the suspected murder of a 52-year-old woman in Ingoldmells.
Caroline Fisher, 52, from Eastwood in Nottinghamshire, died after an incident in Buzz Bar on Sea Lane during the night of Friday, July 20.
Lincolnshire Police launched a murder investigation after the death and three people were arrested in connection with the enquiry, all on suspicion of murder.
Two women, aged 29 and 30 and one 31-year-old man remain in custody for questioning.
Anyone with information should contact police on 101 quoting incident number 610 of July 20.