A Russian man with dual Russian and New Zealand citizenship has pleaded guilty to murdering his parents after a pet dispute.

Sergei Kudryavtsev, 48, moved with his pet dog to live with his parents, Tatiana and Vladimir, in their apartment in the Kingston neighborhood of London three years ago. Badly pet.

Sergey and his parents were at loggerheads over his dog, prompting them to be stabbed to death in their house, and he fled.