The six people arrested in Lincoln in connection with the murder of Latvian man Vasilijs Ransevs have been released on bail, pending further investigations.
The 33-year-old worker was found dead at his house on Portland Street in Lincoln on June 16, and post-mortem examinations indicated he died from head injuries.
Last week Lincolnshire Police arrested six people over three days in connection with the murder investigation.
They arrested five men aged 19, 20, 22, 29 and 31-years-old respectively, and a 17-year-old woman.
They were held in police custody and all have been released since on police bail, pending further investigations.
The murder victim, Vasilijs Ransevs, was originally from Latvia. He had been living in Lincoln for about two years and lived in Peterborough before that.
Lincolnshire Police are continuing their investigation into the murder and are still appealing for anyone with information to call them on 101 quoting incident number 178 of June 16, or call Crimestoppers anonymously on 0800 555 111.