The new season of "Kate Plus 8" just returned on TLC and although Collin Gosselin is part of the new season of the series, his whereabouts have been an issue, especially after Kate Gosselin revealed that he was not at home because he was seeking treatment for educational and social challenges.

Jon Gosselin, Kate's ex-husband and Collin's father, revealed to Entertainment Tonight that he doesn't know where Collin is and that Kate was keeping the information even from him. Jon states that Kate informed him only that "Collin is in a special school for special needs kids with behavioral problems." Jon also claims that he has asked Kate about where Collin was, but she wouldn't answer him.

Around a month ago, twins Cara and Mady Gosselin spoke with People, and it seems like it was the kids who decided to move away from their father. "He makes it seem like we're being kept from him, which is insane. He should maybe spend some time thinking about why we don't want to see him, and maybe realize that if he ever does want a relationship with us, talking about us on TV is not the way to make that happen," Mady stated.

In an interview with Good Morning America, the reality TV star still did not divulge any information regarding the whereabouts of her son claiming that they were ordered by the court not to reveal details with regard to the care of custody of the Gosselin kids. "I've known all along where he is, but the world doesn't know, and I'll leave it at that," Kate stated.

The interview also briefly touched on the child abuse accusation that Collin threw at Kate while he was in treatment, to which Kate revealed that since she and her family were in the public eye, she has been investigated a lot of times with regard to abuse, but that the cases were always unfounded.

"Kate Plus 8" stars Kate, a single mom of 8 children. Twin girls, Cara Nicole and Madelyn "Mady" Kate; and sextuplets, Alexis Faith (girl), Hannah Joy (girl), Aeden Jonathan (boy), Collin Thomas (boy), Leah Hope (girl), and Joel Kevin (boy).

"Kate Plus 8" season 5 premiered in TLC last Tuesday, Nov. 22.

Below is the Good Morning America interview with Kate Gosselin where she discussed the issues with Collin and her ex-husband Jon and addressed the child abuse accusations thrown at her.