  We report the first study of OH(1720 MHz) masers in the LMC in order to probe
regions where supernova remnants interact with adjacent molecular clouds. Using
the ATCA, we observed four sources in the LMC and detected a single OH(1720
MHz) maser with a flux density of 377 mJy toward 30 Doradus. No main line
emission at 1665 or 1667 MHz was detected. The observed OH(1720 MHz) maser
emission from 30 Dor shows characteristics similar to the well-known
collisionally-pumped supernova remnant masers found in the Galaxy, though 30
Dor is known as a star forming region. It is possible that shocks driven by a
nearby supernova remnant or by strong stellar winds from young stars are
responsible for production of OH(1720 MHz) maser in 30 Dor. Future studies are
required to distinguish between collisional and radiative pumping mechanisms
for the 30 Dor OH (1720 MHz) maser.
