  We report an eclipse timing variations (ETV) study to identify close, stellar
mass companions to the eclipsing binaries monitored during the photometric
survey OGLE-IV. We also present an alternative automatic way to determine the
first and last contacts of an eclipse. Applying the phase dispersion
minimization method to identify potential triples, we find close third
components with outer periods less than 1500 days in 23 systems. We present
outer orbit solution for 21 of 23 systems. For the ten, tightest triples we
find that the ETV can only be modeled with the combination of the light-travel
time effect (LTTE) and third-body perturbations, while in case of another 11
systems, pure LTTE solutions are found to be satisfactory. In the remaining two
systems we identify extra eclipses connected to the outer component, but for
the incomplete and noisy ETV curves, we are unable to find realistic three-body
solutions. Therefore, in these cases we give only the outer period.
