laskern:
מאבד עצמו לדעת is a halacha that has many poskim who consider it academic only. The reason they give is that the depression involved in choosing suicide is a חולי that disqualifies it from being considered suicide according to the halacha. In practice, the true מאבד עצמו לדעת is buried away from others in a Jewish cemetery, which is less honorable. This has been done extremely few times in America in the past many years. I have first hand knowledge of a case that was treated so, and the ones behind it were desperate to protect the true murderer.