  The desire to create an energy efficient world is bound to be incomplete
without the discovery of a room temperature superconductor at ambient pressure.
A recent report on the room-temperature ambient-pressure superconductor has
inspired scientists to study the Cu doped Lead apatite named as LK-99. Here, we
have synthesized Cu doped LK-99 and Ni-doped LK-99 compounds and studied their
temperature dependent transport and magnetization behavior. In spite of the
presence of impurity phase Cu$_2$S, the temperature dependent resistance shows
an insulating nature of the sample. The radio frequency penetration depth
measurement unveils the absence of diamagnetic flux expulsion in this sample.
The temperature dependent ac susceptibility measurements reveal the
paramagnetic nature of the Ni doped LK-99.
