A 69-year-old man arrested on suspicion of murder after the death of a woman in Greater Manchester has been released under investigation, police said.
Officers found the woman seriously injured at a house in Bonscale Crescent, Middleton, on Thursday.
Greater Manchester Police said despite the "best efforts" of paramedics, she "could not be resuscitated and she sadly died".
A post-mortem is due to take place later on Friday.
Inquiries continue to establish the circumstances surrounding her death.