Here are some notes from me on this report. The space.com article stated, "The researchers who found the latest black hole published their findings March 15 on the preprint server arXiv(opens in new tab), but the research has not been peer-reviewed yet."…"More likely, it is a so-called Population III Star — a category of hypothesized stars that were the first to ever exist in the universe and were made of just hydrogen and helium — that exploded and left behind a black hole around 200 million years after the Big Bang and "then accreted a lot of material pretty quickly and occasionally at a faster-than-stable rate," to swell up to the size that researchers observed, Larson explained. The researchers will now begin working alongside the team that built MIRI to scan for an even stronger signature of the light from the distant galaxy. Those emissions could contain further clues about how the mysterious black hole formed at the galaxy's center."
ref - A CEERS Discovery of an Accreting Supermassive Black Hole 570 Myr after the Big Bang: Identifying a Progenitor of Massive z > 6 Quasars,
https://arxiv.org/abs/2303.08918, 15-March-2023. "We report the discovery of an accreting supermassive black hole at z=8.679.."
My note. There are metals seen here at redshift 8.679, so no zero-metal gas is found. Some models use supermassive Population III stars some 10,000 to 100,000 solar masses as seeds for the formation of SMBHs, none observed. The comoving radial distance for this object at z=8.679, 30.447 Gly. Space is assumed to be expanding at 2.1485421E+00 or about 2.149 x c velocity when H0 = 69 km/s/Mpc. We cannot see this space today from Earth and Population III stars that are used to seed the formation of SMBHs, not observed either in astronomy. Neither are seen gas clouds that are zero-metal.]
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