  We report here discovery of Quasi Periodic Oscillations (QPOs) in the High
Mass X-ray Binary (HMXB) Pulsar XTE J0111.20-7317 during a transient outburst
in this source in December 1998. Using observations made with the proportional
counter array of the Rossi X-ray Timing Explorer during the second peak and the
declining phase of this outburst we have discovered a QPO feature at a
frequency of 1.27 Hz. We have ruled out the possibility that the observed QPOs
can instead be from the neighbouring bright X-ray pulsar SMC X-1. This is the
highest frequency QPO feature ever detected in any HMXB pulsar. In the absence
of a cyclotron absorption feature in the X-ray spectrum, the QPO feature, along
with the pulse period and X-ray flux measurement measurement helps us to
constrain the magnetic field strength of the neutron star.
