Inform 802.1X supplicant on disconnection

Hi, I am writing a 802.1X authenticator. Is there a way for an
authenticator to inform a supplicant that it wants to disconnect that
supplicant after that supplicant successsfully authenticate to the
server? I don't know of any mechanism or message that can be used to
inform supplicant about the disconnection. Supplicant will still
remain opened and authenticated even though I shut down authenticator.
Thanks.

Regards,
Ang Way Chuang