A man has been arrested in connection with the death of a 16-year-old girl, police said.
The teenager was rushed to hospital after officers were called to an address in Pierson Street in Newark, Notts, just after midnight on Sunday.
Nottinghamshire Police said she was pronounced dead shortly after arriving at Nottingham's Queen's Medical Centre.
A force spokesman said: "The 23-year old man remains in police custody pending further inquiries.
"The girl's death is currently being treated as unexplained."