It is understood police looking for missing mother Farrah Fadli from Ayr want to talk to her as she could be a potential witness to a murder.
It comes after officers released CCTV images of two men they are trying to trace and warned the public not to approach them.
It is believed Ms Fadli might have been with the men at some point, but may not be with them now.
The men have been named as Craig Munro, 30, and 26-year-old Allan Robertson.
Police Scotland and the Crown Office said they were unable to confirm if the missing person investigation and the search for the men were linked.
A spokesman for the Crown Office said it was also unable to say, for legal reasons, why the two men were being sought.
One image appears to have been taken at the same location where missing mother Farrah Fadli was sighted earlier this month.
It is thought Ms Fadli could potentially have information about the death of 52-year-old John Smith.
Officers launched a murder inquiry after he died in hospital on 11 October following a disturbance at a property in Misk Knowes in Stevenston two days earlier.
Ms Fadli, who is also known as Farrah Gillespie, has been missing from her home in Ayr since Wednesday 12 October.
The 29-year-old initially disappeared with her children but dropped them off at a friend’s house in Irvine on 14 October. She has not been seen since.
She is 5ft 4in, of slim build with dyed blonde hair.
She has not gone missing before and officers previously said it was extremely unusual for her to leave her children for such a long time and not be in touch with her family and friends.