  This paper reports the results from the multicolor photometric observations
of 15 pre-main sequence stars collected in the period 2010 September - 2017
October. The stars from our study are located in the star-forming HII region IC
5070. These objects were previously detected as either emission line stars,
flare stars, T Tauri variables or Herbig Ae/Be stars. Photometric observations,
especially concerning the long-term behavior of the objects are missing in the
literature. We present the first photometric monitoring for all stars from our
study. The analysis of the obtained BVRI photometric data allows to draw a
conclusion that all investigated objects are variable stars. In the case of
LkHa 146 we identified previously unknown periodicity in its photometric
variability.
