Did they ever catch the person(s) that killed Rudolf Kastner?

Question

If so who was it and what was their punishment?

Answer 1

Assassination

Kastner was shot on March 3, 1957, by Ze'ev Eckstein, Yosef Menkes and Dan Shemer.  He died of his injuries nine days later. Eckstein, 24, described as a Holocaust survivor, stated he killed Kastner to avenge his activities in conjunction with n**i figures such as Adolf Eichmann.  Based on Israeli court records, Ben Hecht has written that Eckstein had been a paid undercover agent of the Israeli government's intelligence service a few months before the shooting.  But the idea that the killing was a government cover-up has been described as "absolute nonsense" because the head of the intelligence service was a close personal friend of Kastner.

http://en.wikipedia.org/wiki/Rudolf_Kast...

Answer 2

Three people were accused and all were sentenced to life in prison.