  A handful of HII regions are known to exhibit a compact radio source near
their centers. The nature of these compact radio sources is not well
established. We present the analysis of new as well as archival Very Large
Array observations of the compact source projected near the center of the NGC
6334A HII region, part of the NGC 6334 complex. We show that the compact source
is time variable on a scale of years and determine for one epoch a non-thermal
spectrum, suggestive of synchrotron emission. We propose that this source could
be the wind interaction region of a massive binary system that could be the
ionizing source of NGC 6334A.
