The astrophysical nature of the hard x-ray source GRS 1915+105 is
unknown. Recent observations in the radio and near infrared wavelengths
have led to the identification of a counterpart at those energies.
It is likely that GRS 1915+105 may also be identical with the
soft gamma-ray repeater SGR 1900+14 showing recent activities.
In addition, CO measurements indicate the presence of  two
molecular clouds, one of which being a good candidate for a possible
association with the GRS 1915+105.
The source shows strong variability (partially correlated) in radio,
near IR and hard x-rays including strong outbursts.
This observational evidence could
be explained by a scenario in which a possible black hole is fed by
accretion from giant molecular clouds and the observed variability
and bursts might be due to thermal instabilities during accretion.
In case GRS1915+105 will undergo a new outburst at other wavelengths
(including new soft gamma-ray repeating events (as reported e.g.
from the BATSE experiment onboard GRO)) immediate follow-up observations
in the IR shall be conducted in form of a ToO observation.
The investigations of the IR quiescent counterpart are subject of
a second independent proposal.