  Considered here is the interrelation between five diffuse interstellar bands
(DIBs): $\lambda\lambda$ 5545, 6113, 6196, 6445 and 6614 \r{A}. Two DIBs
($\lambda$ 6196 and $\lambda$ 6614 \r{A}) have already been known as well
correlated with each other; their relation with three other, weaker bands, was
investigated for the first time. To accomplish this task high-resolution
spectra ($\lambda/\Delta\lambda$ $\approx$ 100,000) with high signal-to-noise
ratio (S/N) of 54 hot O -- B stars with reddening 0.12 -- 1.45 mag were used.
Analysis of measured equivalent widths has allowed to establish linear
dependencies and evaluate linear correlation coefficients as high as 0.968 --
0.988 between the intensities of these five DIBs. Such a degree of correlation
may indicate their common origin. Several spacings in wavenumbers found between
these DIBs correspond to the energies of vibrational transitions in some PAHs
resulting in IR emissions at $\lambda\lambda$ 16.4, 11.3, 7.7, 6.2 and 3.3
$\mu$m.
