  The NA61/SHINE experiment aims to discover the critical point of strongly
interacting matter and study the properties of the onset of deconfinement. For
these goals a scan of the two dimensional phase diagram ($T$-$\mu_{B}$) is
being performed at the SPS by measurements of hadron production in
proton-proton, proton-nucleus and nucleus-nucleus interactions as a function of
collision energy and system size. In this contribution preliminary results on
transverse momentum and multiplicity fluctuations expressed in terms of
strongly intensive quantities from the Ar+Sc energy scan will be presented.
These fluctuations are expected to be sensitive to the existence of a critical
point. The results are compared with results from the p+p and Be+Be energy scan
as well as with NA49 measurements.
