A missing link black hole that sits in the mass gap between stellar-mass black holes and supermassive black holes is "parked" right by the Milky Way's central black hole, Sagittarius A*.

Scientists waited ages to find a 'missing link' black hole — then stumbled upon 2

Source: space
Source Link: https://www.space.com/black-hole-intermediate-mass-missing-link-irs-13