http://revach.net/article.php?id=4911

Section: Halacha   Category: Tshuvos
Rav Moshe Feinstein - Burying Ashes Of A Niftar

In Igros Moshe (YD 3:147:2), Rav Moshe Feinstein writes that if a dead person is cremated, either because they were a Rasha who requested this, or even if their children were Reshaim and had this done to them, their ashes should not be buried in a Jewish Bais HaKvaros. Moreover says Rav Moshe, ashes of any niftar never need to be buried.

Important Note: We bring this tshuvah as a starting point for discussion and not to convey any halacha. We try to convey the Tshuva to the best of our ability. We admit that our understanding may not be accurate. One should learn the tshuva to verify the accuracy of our interpretation. Please understand that this Tshuva may not be the final word on this topic. One should consult a Rav before drawing any conclusions.