  IGR J17091-3624 and IGR J17098-3628 are two X-ray transients discovered by
INTEGRAL and classified as possible black hole candidates (BHCs). We present
here the results obtained from the analysis of multi-wavelength data sets
collected by different instruments from 2005 until the end of 2007 on both
sources. IGR J17098-3628 has been regularly detected by INTEGRAL and RXTE over
the entire period of the observational campaign; it was also observed with
pointed observations by XMM and Swift/XRT in 2005 and 2006 and exhibited flux
variations not linked with the change of any particular spectral features. IGR
J17091-3624 was initially in quiescence (after a period of activity between
2003 April and 2004 April) and it was then detected again in outburst in the
XRT field of view during a Swift observation of IGR J17098--3628 on 2007 July
9. The observations during quiescence provide an upper limit to the 0.2-10 keV
luminosity, while the observations in outburst cover the transition from the
hard to the soft state. Moreover, we obtain a refined X-ray position for IGR
J17091-3624 from the Swift/XRT observations during the outburst in 2007. The
new position is inconsistent with the previously proposed radio counterpart. We
identify in VLA archive data a compact radio source consistent with the new
X-ray position and propose it as the radio counterpart of the X-ray transient.
