Cargo carrier

[WhatTheHell!]

I can't figure out how to remove cargo carrier (roof rack ) from my odyssey , it looks like its has keyhole but ignition key doesn't fit and that was only key I got ? Any help 'd be awesome !

[Rage King]

pics of key hole and fitting design. could it be a hex type bolt (allen keys) or star hex type?

pics would help bud.