Adding another layer to the already complex death case of Caylee Anthony, the father of the little girl has finally been revealed.

Now 10 years after the remains of the toddler were found, Donna Maclean has spoken to RadarOnline.com in an interview saying her late son is most likely the father. The name of Caylee’s father was kept secret by mother Casey Anthony, and Maclean believes it is her son Michael Duggan.

While Anthony has never revealed who the father of Caylee is, Maclean told Radar Online that it all became clear at the end of the murder trial. Anthony has only revealed to friends that the little girl’s father had died in a car accident, according to the news outlet.

The death of Caylee was shrouded in controversy as Anthony was accused of murdering her own daughter. During the nationwide trial, Anthony was acquitted of the murder charges, quickly becoming the most hated mother in America.

Caylee Anthony Father Caylee Anthony's father has finally been revealed by the late man's mother. Casey Anthony (L) talks with her attorney Dorothy Clay Sims at her sentencing hearing on charges of lying to a law enforcement officer at the Orange County Courthouse July 7, 2011 in Orlando, Florida. Anthony was acquitted of murder charges on July 5, 2011 but will serve four, one-year sentences on her conviction of lying to a law enforcement officer. She will be credited for the nearly three-years of time served and good behavior and will be released on July 13. Photo: Getty Images/Joe Burbank-Pool