Police in the North are treating the sudden death of a man in Magherafelt as "suspicious".
The 46-year-old died during the early hours of Tuesday.
A 32-year-old woman has been arrested and is currently helping police with their inquiries.
Detective Inspector Will Tate said: "Police are investigating the sudden death of a 46-year-old man in the Magherafelt area in the early hours of Tuesday.
"A post-mortem will take place in due course to determine the cause of death.
"We are treating this as suspicious at this stage."