Troops Hunt Snipers In Mexico City House

MEXICO CITY, Oct. 3--Troops hunted room to room through a huge apartment complex Thursday for snipers silenced by army fire in the most vicious battle of Mexico's City's student rebellion, which has claimed at least 40 lives since mid-July. Tanks roamed down-town streets.

Fierce fighting Wednesday night between student rebels and the forces of President Gustav Diaz Ordaz' government in the area of the Plaza of Three Cultures left at least 25 dead, hundreds injured and thousands in jail.

The Executive Committee of the International Olympics Committee met to ponder possible effects of the disorders on the 1968 Olympic Games.

(SDS is planning a demonstration at 10 a.m. today at the Mexican Consulate, 140 Federal St., Boston, in support of the Mexican students.)