Police yesterday arrested Pedro Albizu Campos '16 in San Juan, Puerto Rico, because of his alleged leadership of the abortive native uprising and the attempt to assassinate President Truman.

Governor Luis Munoz Marin declined to specify the nature of the charges against the president of the Nationalist Party, a violently anti-United States group.

On the body of one assassin, killed in front of Blair House on Wednesday, were found two letters bearing Campos' name. Campos surrendered early yesterday after tear gas bombs were thrown into his home.

Besides going to the College, Campos attended the Harvard Law School but has never been an active alumnus of the University. He was unable to attend his class' 25th reunion in 1941, since he was serving a term in Atlanta Penitentiary for his insurrectionary activity.

No Answer

Campos, who married a Radcliffe graduate student, did not bother to return most of the questionnaires sent him by his class secretary for the class reports.

But his wife sent a letter to the secretary in 1941, explaining her husband's activities and mentioning the "hopeless tragedy of his countrymen's life." Speaking of the violence in Puerto Rico, she said "the burying yards and jails have been filled with Puerto Rican patriots and unjust indictments are daily occurrences."

While at the University, Campos led the formation of a chapter for the recognition of the Irish Free State.