Post-mortem examinations have concluded that a man and woman found dead at a house in Worksop both died from stab wounds.
A 28-year-old man arrested on suspicion of murder remains in hospital receiving treatment.
Detectives are continuing to investigate the circumstances surrounding the deaths after police were called to a house in Hardwick Road East at around 7am on Monday 21 April.
The pair originated from Poland and have been named locally as Leszek Dantes and his wife Malgorzata.
Formal identification are expected to take place later today.