article_snippet: (CNN)Russian police moved with surprising speed to arrest five suspects, all of five suspects Chechens, in the killing of opposition figure Boris Nemtsov.
article_snippet: all of them Chechens, in the killing of opposition figure Boris Nemtsov tried to arrest a sixth suspect, but a sixth suspect reportedly threw a grenade at the arresting officers and then blew a sixth suspect up.
article_snippet: Conspiracy theories are rife, but so far, none seem totally convincing.
article_snippet: The key suspect, Zaur Dadayev, reportedly initially confessed to being involved with the shooting.
article_snippet: A further twist is that Chechens reportedly are fighting in Ukraine -- on both sides of the battle line (for Russia and for the Russian-allied separatists.)
article_snippet: Many Russians are convinced that what Many Russians call the "fascist" Kiev government would stop at nothing to frame Putin.
article_snippet: After all, a significant number of people, fed by domestic propaganda, still believe the Ukrainian air force shot down Malaysian Airlines Flight 17 over Ukraine despite much of the evidence pointing to Russian-backed rebels as the culprits.
article_snippet: Supporters of the theory are mainly in the opposition camp.
article_snippet: Supporters of this theory accuse the Kremlin of whipping up hatred against the so-called Fifth Column -- "traitors" who are trying to undermine Russia from within.
article_snippet: But whatever the reality of what happened in Moscow, high-profile killings in Russia, especially ones with a political connection, are rarely solved.
article_snippet: Chechens were convicted of killing journalist Anna Politkovskaya, for example, but there still is no explanation of why Chechens did it or who organized the murder.
highlights_snippet: Conspiracy theories about the killing are rife, but none seem convincing .