NIFTY--Gap down occurs @18260 level??

Observations:
NIFTY Previously showing Strong bearish pressure at this level.
NIFTY-- Price leaving a demand zone 18180 if this level acts as support, price reach again 18260 level.
--------->> If failed to act as demand zone the same zone is acts as Supply again and price falls back to below 18180.
--------->> Go short below for targets of 18060,17950 levels.