  We report on the optical spectroscopic follow up observations of the
candidate counterparts to four INTEGRAL sources: IGR J04069+5042, IGR
J06552-1146, IGR J21188+4901 and IGR J22014+6034. The candidate counterparts
were determined with Chandra, and the optical observations were performed with
1.5-m RTT-150 telescope (T\"{U}B\.{I}TAK National Observatory, Antalya, Turkey)
and 2.4-m Hiltner Telescope (MDM Observatory, Kitt Peak, Arizona). Our
spectroscopic results show that one of the two candidates of IGR J04069+5042
and the one observed for IGR J06552-1146 could be active late-type stars in RS
CVn systems. However, according to the likelihood analysis based on Chandra and
INTEGRAL, two optically weaker sources in the INTEGRAL error circle of IGR
J06552-1146 have higher probabilities to be the actual counterpart. The
candidate counterparts of IGR J21188+4901 are classified as an active M-type
star and a late-type star. Among the optical spectra of four candidates of IGR
J22014+6034, two show H\alpha emission lines, one is a late-type star and the
other is a M type. The likelihood analysis favors a candidate with no
distinguishing features in the optical spectrum. Two of the candidates
classified as M type dwarfs are similar to some IGR candidates claimed to be
symbiotic stars. However, some of the prominent features of symbiotic systems
are missing in our spectra, and their NIR colors are not consistent with those
expected for giants. We consider the IR colors of all IGR candidates claimed to
be symbiotic systems and find that low resolution optical spectrum may not be
enough for conclusive identification.
