Mystery surrounds the death of a man whose body was discovered near a residential street in the middle of the night.
It is "unclear" how the 20-year-old, who was found shortly after midnight near George Avenue, Rowley Regis, sustained fatal injuries, police said.
Anyone who saw or heard anything suspicious has been urged to contact West Midlands Police.
A woman told the BBC she heard men arguing before the discovery was made.
The area has been sealed off while officers make house-to-house inquiries.