"I can't understand why," Whitehead's friend and ex-partner Dorthea Harris said. "They just took my babies' daddy away."
Police didn't specify what charges Duncan is facing. Court documents weren't immediately available.
The Homicide Unit's investigation is ongoing. Police asked anyone with information about the case to call the Criminal Investigative Section at 513-352-3542 or Crime Stoppers at 513-352-3040, or to submit a tip online at P3tips.com.