Pawan Kumar, 26, was found dead at 1:42 p.m. of an apparent drug overdose at a motel in Bellville, New Jersey.
The Essex County Prosecutor's Office tells Action News they are awaiting a toxicology report from the medical examiner's office to confirm the cause of death.
Kumar, of the 3000 block of Naamans Road at the Stratford Apartments in Wilmington, was wanted for the murder of 26-year-old Danielle Mehlman of Bensalem.
Mehlman's body was found by housekeeping staff at 11:00 a.m. Monday in a room on the first floor of the Atlantic Oceanside Motel in the 1700 block of Coastal Highway.
While there is no word on a motive in her killing, the Essex County Prosecutor's Office say the victim and suspect had recently been dating.
Dewey Beach is a popular summertime destination between Rehoboth Beach and Bethany Beach along Delaware's Atlantic shore.