Following up on earlier non-detections of the Type II SN 2024ggi in NGC 3621 (ATel #16612) at 1-26 GHz, we re-observed the source with the Australia Telescope Compact Array (ATCA) at 9.0 and 5.5 GHz on 2024 May 4.4-4.6 UT. SN 2024ggi was detected with flux densities of 0.10 +/- 0.03mJy at 5.5 GHz, and 0.12 +/- 0.05 mJy at 9.0 GHz. Adopting a host galaxy distance of 7 Mpc from the NASA Extragalactic Database (NED) this implies a 5.5 GHz luminosity 3 weeks after discovery of 6E+24 erg/sec/Hz.