Tough one. On the one hand there's no obvious gravitational lensing to point to a black hole, on the other hand 90 million years is way too recent for it to be a nebula created from a star with a mass close to that of a supermassive black hole. The multiple bright spots would suggest a nebula though.

It's a star, there's no pattern of orbit around the center, and since there are two places that are concentrated.

An interesting find. Bookmarked for later.