MEXICO CITY (AP) _ Alfonso Sanchez Madariaga, a founder of Mexico's dominant labor movement, has died at age 94, newspapers reported Sunday.

Sanchez was one of the ``five wolf cubs,'' young labor leaders who split with the then-dominant labor federation in 1929 and laid the groundwork for what became the Mexican Labor Confederation, or CTM.

The CTM still dominates Mexico's labor movement today.

He remained active in the confederation as well as the Mexican Social Security Institute throughout his life. He died Saturday of a heart attack.

Sanchez was born in Mexico City on Nov. 15, 1904. Together with Fidel Velazquez, he formed a milkman's union in Mexico City in 1924 and they went on to lead the Mexico City labor confederation.

In 1929, they split with the dominant Regional Confederation of Mexican Workers and eventually founded the CTM along with Vicente Lombardo Toledano _ a socialist whom they later forced out of power.

Sanchez was twice a senator from Mexico City, once serving as Senate president. He was also a federal congressman for two terms and served as the CTM's delegate to numerous international labor organizations.

He is survived by his widow and five children. The funeral was held over the weekend.