Can I claim someone as a dependant who does not live with me? I provide for my little brother but he lives with our grandmother.

Our mother is recently deceased and my grandmother got custody of my little brother as I was still in school and my lease is not over for my one bedroom apartment. I provide for him but he does not live with me. Is there a way to claim him? She does not work, only a disability check and needs the extra income but I would like to file him as a dependant if I can.