A Russian MP has asked President Dmitry Medvedev to investigate claims by a regional president that he has met aliens on board a spaceship.

Kirsan Ilyumzhinov, the leader of the southern region of Kalmykia, made his claim in a television interview.

MP Andre Lebedev is not just asking whether Mr Ilyumzhinov is fit to govern.

He is also concerned that, if he was abducted, he may have revealed details about his job and state secrets.

The MP has written a letter to Mr Medvedev raising a list of his concerns.

In his letter he says that - assuming the whole thing was not just a bad joke - it was an historic event and should have been reported to the Kremlin.