James Webb Space Telescope have uncovered a number of previously hidden low-luminosity Active galactic Nuclei in the early universe. The recent discovery of GN-1146115 a supermassive black hole (SMBH) of 3.98 × 10^8 M⨀ at z = 6.68 challenges our understanding of BH formation and growth. The prime objective of this study is to determine if the existence of a SMBH in GN-1146115 can be confirmed by detection of radio flux. To achieve this goal, we employ a theoretical model to estimate the radio flux from a BH and its host galaxy. We found that radio emission from BH dominates over host galaxy and can be detected with current and upcoming radio observatories such as VLA, ngVLA and SKA. The detection of a radio flux above a few hundred nJy will validate the presence of SMBH in GN-1146115.