Want to include LDAP group information in Access-Accept message

Hello, I am set up FreeRadius for LDAP authentication. I know that you can configure so that when Access-Accept message is sent, you can have custom attributes, using a dictionary file. I am wondering if I can set up FreeRadius to send back the LDAP groups that a user is a member of. Authentication with LDAP should use the username. Is it possible to get FreeRadius to query the LDAP server to find the groups associated with that username, then send this group list back to the connecting user in the Access-Accept message? Will this require a plugin? Can someone give me some guidance on how to do this? Thank you, -Justin