"message": "Must have admin rights to Repository." for personal token in standard github account

Question

I am using Github API with the personal access token, from a standard GitHub account.

although the token has the permission to delete the repo.

I am still getting :

''' {

"message": "Must have admin rights to Repository.",

"documentation_url": "https://developer.github.com/v3/repos/#delete-a-repository"

} '''

My question is similar to this Delete github respository via API, but it doesn't have any answer.