A 28-year-old man is being questioned by police after a woman's body was found in a pool of blood in an underpass.
The 43-year-old local woman was discovered by a member of the public early on Sunday morning and confirmed dead by paramedics at the scene in Bay Drive, in the Bullbrook area of Bracknell, Berkshire, after emergency services were called.
The man in custody was also from the town, Thames Valley Police said.
Lee Paul-Ferris, 26, and his brother Glenn, 22, called police after encountering the body of the woman, whom they described as being "oriental" in appearance.
The pair, who work as gardeners and were loading up their van, ran into the underpass after another man discovered the body at 8am.
Lee, a father of four, said it was clear the woman had been attacked, saying that her head was in a pool of blood with blood spattered on the wall.
The brothers said they had not seen the woman before.
Supt Paul Hayles said: "The woman was found at an underpass near Bay Drive and we are yet to determine the circumstances of her death. We would urge anyone who was in or around the area in the early hours of this morning and may have seen anything to please contact us as a matter of urgency."
Nearby roads were closed and a large cordon was in place restricting access to the underpass to enable specialist police officers to examine the scene on Sunday.
The crime scene is close to a large collection of business units as well as an estate where residents spoke of their shock. One woman, who did not want to be named, said she would not let her two teenage daughters out at night by themselves now.