Belarusian opposition politician Sviatlana Tsikhanouskaya on Friday asked supporters to sign an online petition demanding a recount of last Sunday's presidential election, in which she believes she was cheated out of victory.

In a video posted on YouTube, Tsikhanouskaya, who is in neighboring Lithuania, also asked supporters to demand an official investigation into allegations that the election was falsified.

She called for an end to violence, which has surged in the wake of veteran leader Alexander Lukashenko's re-election, and asked all city mayors to organize peaceful gatherings this weekend.