** Shares of Intelligent Monitoring Group IMB.AX drop as much as 6.3% to A$0.6, their biggest intraday pct fall since November 11

** Security firm raises A$20 million ($13.26 million) through placement

** Offer price of 58 Australian cents per share represents a 9.4% discount, as of last close

** Co says funds from placement to be used for working capital following proposed acquisition of Tyco New Zealand and Red Wolf Security announced on 11 December

** Stock up ~10% YTD, including session's moves

($1 = 1.5078 Australian dollars)

(Reporting by Aamir Sheik Khalid in Bengaluru)

((Aamir.SheikKhalid@thomsonreuters.com))