A mysterious advertisement labelling US President Barack Obama a killer has appeared in Russia.

"Smoking kills more people than Obama, although he kills lots and lots of people," were the words written alongside a pensive looking Mr Obama, as he drew from a cigarette.

Followed by the line: "Don't smoke, don't be like Obama."

Dmitry Gudkov, the sole liberal opposition MP in Russia's parliament, posted a photograph of the large poster on Facebook.

He said he was "disgusted and ashamed" by the poster which appeared on the streets of Moscow.

The advert has no attribution, so it is unclear whether the poster is part of a anti-smoking campaign, or an attack against Mr Obama.

But the poster is the latest in a string of anti-Obama messages coming from Russia.

Last week, an appeal to the United Nations from Russian students to "judge the US President for his crimes" was posted on YouTube.

Another video showed a group of students falling to the floor of a gymnasium, as a lone girl remained standing holding a sign that claimed the "President of the United States kills 875 people every week".