Hackers have broken into the Twitter microblog of US Ambassador to Russia Michael McFaul and posted tweets slandering the Russian presidential election as illegitimate, Ambassador's spokesperson said.

Messages about massive fraud, which had been allegedly registered at polling stations across Russia, questioning the legitimacy of the election appeared on Twitter earlier this Sunday.

The press secretary denounced them as being false, stressing Mr. McFaul had never written them.

He also said the tweet about legitimacy was posted in Russian, whereas the American ambassador usually posts his messages in English.

The official US stance on this incident will be announced later, the spokesperson added.

(RIAN)