It's been nearly three years since Paula Patton and Robin Thicke ended their marrage, but it seems the animosity between these two is still, well, thick. 
Us Weekly reports that the singer is now being investigated by the Los Angeles County Department of Child and Family Services amid allegations of child abuse for spanking their son, Julian. As a result, Patton has reportedly denied her ex-husband access to their 6-year-old, throwing gasoline on their already bitter custody battle.

Julian reportedly told school officials that Thicke spanked him more than once. The school then allegedly reported the incident to the DCFS on January 3 and the department opened an investigation. The DCFS has since interviewed Julian and Thicke.
In court documents, Thicke denies any wrongdoing — but does admit to using corporal punishment on occasion. "On a very rare occasion and only as a last resort, I will use light spanking, but it is consistent with the law — open hand on the butt. This is the type of discipline to which Paula and I agreed during our marriage." 
What's more, the "Blurred Lines" singer thinks the entire investigation is Paula's payback for not being invited to his father Alan Thicke's funeral last month. “It is my belief that Paula holds residual anger towards me because I and my family would not permit her or her family to attend the funeral of my father on December 20, 2016,” he alleges in the papers.
He continues, "Paula did not have a positive relationship with my father … As such, she was not welcome at his funeral. It is my belief that Paula only wanted to attend because it would have resulted in additional public exposure for her."
A source close to the situation says that a “judge denied everything in [Patton's] complaint” and that “Child Protective Services didn’t see any evidence of wrongdoing.”

Catch Robin on a recent episode of Real Husbands of Hollywood, above.