Who attempted to assassinate president Truman in November 1950?

In November 1950, an attempt was made to assassinate President Harry S. Truman by two Puerto Rican nationalists, Oscar Collazo and Griselio Torresola. They attacked Blair House, where Truman was staying while the White House was under renovation, in an effort to promote Puerto Rican independence. The assassination attempt resulted in a shootout, during which Torresola was killed, and Collazo was captured and later sentenced to death, though his sentence was commuted to life in prison.