  Recently, Kundu et al (2019) reported that the globular cluster NGC 5024
(M53) possesses five extra-tidal RR Lyrae. In fact, four of them were instead
known members of a nearby globular cluster NGC 5053. The status of the
remaining extra-tidal RR Lyrae is controversial depending on the adopted tidal
radius of NGC 5024. We have also searched for additional extra-tidal RR Lyrae
within an area of $\sim8$~deg$^2$ covering both globular clusters. This
includes other known RR Lyrae within the search area, as well as stars that
fall within the expected range of magnitudes and colors for RR Lyrae (and yet
outside the cutoff of 2/3 of the tidal radii of each globular clusters for
something to be called "extra-tidal") if they were extra-tidal RR Lyrae
candidates for NGC 5024 or NGC 5053. Based on the the proper motion information
and their locations on the color-magnitude diagram, none of the known RR Lyrae
belong to the extra-tidal RR Lyrae of either globular clusters. In the cases
where the stars satisfied the magnitude and color ranges of RR Lyrae, analysis
of time series data taken from the Zwicky Transient Facility do not reveal
periodicities, suggesting that none of these stars are RR Lyrae. We conclude
that there are no extra-tidal RR Lyrae associated with either NGC 5024 or NGC
5053 located within our search area.
