Investigators say it was around 10:45 p.m. when officers responded to a female caller who said she had been abducted from a residence in the 100 block of Acorn Lane.
She also told police that a man at the home was assaulted during the incident, which she described as a home invasion.
Police went to the Acorn Lane address and found a 59-year-old man dead inside.
The exact cause of that man's death is unknown pending an autopsy. His identity has not been released.
On Tuesday morning, police released a photo of a person of interest in this case as the investigation continues.
Anyone with information about the incident or the photograph is asked to contact the Dover Police Department at (302) 736-7111, Delaware Crime Stoppers at 1-800-TIP-3333 or online at www.tipsubmit.com