nationalists in new york city as well as puerto rico were outraged by the counterattack. griselio torresola and oscar collazo, among other nationalists in the city, made a quick plan to assassinate the u.s. president, harry s. truman. he was reported as staying at blair house while the living quarters of the white house were under renovation. after traveling south by train, on november 1, 1950, they attacked guards at the blair house, seeking to gain entry. torresola and white house police officer leslie coffelt were killed in the attempt; collazo and two american officers were wounded.