ENEMY PLAN FOUND FOR SEIZING SAIGON; U.S., Uncovering Plot, Says Troop Build-Up Thwarted Take-Over During Crisis
US mil officials rept discovery of enemy plans, thwarted by US mil build-up, to take over Saigon by force; rept enemy began preparation in Apr '65 by sending large combat units and tons of supplies into S Vietnam to prepare for what they believed to be imminent pol and mil collapse of S Vietnam; rept enemy moved 1 div across demilitarized zone into S Vietnam in July, put 2d div in eastern Laos; believe enemy will try to seek notable victory before elections in S Vietnam