The user of a computer can be located from the IP address. As far as I know, only the Moderators can do it. As far as I understand, other members cannot locate the IP address without knowing one's mail address.if you feel someone is false flagger then you have to report to the admins with convincing evidence.
I think this @Riyad guy is from Bangladeshi Hindu but he spreads rumors, creates divisions in line with religions as well as regions, and propagates BD-India Bhai-Bhai. He has an ulterior motive.