  There are many observational evidences for the existence of massive compact
condensations in the range $10^6 -10^{10} M_\odot$ at the core of various
galaxies. At present such condensations are commonly interpreted as Black Holes
(BHs). However, we point out that while such Black Hole Candidates (BHCs) must
be similar to BHs in many respects they, actually, can not be BHs because
existence of Black Holes would violate the basic tenet of the General Theory of
Relativity (GTR) that the worldline of a material particle must be timelike at
any regular region of spacetime. On the other hand general relativistic
collapse of very massive bodies should lead to Eternally Collapsing
Configurations (ECOs) or Ultra Compact Objects (UCOs). While ECOs/UCOs may
practically be as compact as corresponding BHs, they will have a physical
surface. Also while BHs do not have any intrinsic magnetic field ECOs may have
strong intrinsic magnetic field. We point out that despite many claims actually
there is no real evidence for the ``Event Horizon'' (EH) of supposed BHs and on
the other hand, there are tentative evidence for the existence of strong
magnetic field in several BHCs (or ECOs). The presence of such intrinsic
magnetic field may render the task of explaining high energy radiation
phenomenon in many Active Galactic Nuclei easier.
