A post-mortem examination carried out to determine what caused the deaths of two people from Frankley in Birmingham has proved inconclusive.
Both deaths are unexplained and more tests will be carried out.
Suzanne Van Hagen and John Morton were found dead by their nine-year-old daughter.
The young girl is now being looked after by family.
Investigations continue. Anyone with information is asked to contact West Midlands Police.
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A senior court prosecutor from Worcester stabbed his wife in the head as she slept after a bout of depression brought on by work pressures.
A man has appeared at Birmingham Magistrates Court charged with the murder of another man who was found dead in Coventry on Monday night.
"This was an incident of domestic violence of the highest severity which sadly had tragic consequences."