SE Asia Stocks-Thai index underperforms on telecoms auction woes

BANGKOK, Dec 21 (Reuters) - Most Southeast Asian stock markets fell on Monday as weak oil prices hit energy shares, with the Thai benchmark touching a one-week low as key telecoms shares faced more selling pressure amid concerns over high 4G bidding prices and rising competition. Thai key SET index fell 1.1 percent to the lowest since Dec. 14, led by a 20 percent plunge in shares of Total Access Communication and a 14 percent decline in shares of Jasmine International. The lengthy auctio