| Smoke and flames poured from the national assembly building in Libreville |
Violence has broken out in the
Gabonese capital Libreville after President Ali Bongo was declared
winner of Saturday's presidential election.
| Supporters of Mr Ping clashed with police |
| Soldiers were called in to tackle protesters |
| Before entering politics Mr Ping was a career diplomat |
| Mr Bongo took over from his father as president in 2009 |
He called for international assistance to protect the population. The election result was announced on Wednesday afternoon and gave Mr Bongo a second seven-year term with 49.8% of the vote to Mr Ping's 48.2 %, a margin of 5,594 votes.
Mr Ping said the election was fraudulent and "everybody knows" he won. Protesters took to the streets shortly after the announcement. They set fire to the parliament building and clashed with riot police.
Mr Ping's camp has said figures from the president's stronghold showed a 99% turnout. He has called for voting figures from each polling station to made public.
The US and EU have also called for the results to be made public while UN Secretary-General Ban Ki-moon has urged calm. In 2009, Mr Bongo took over from his father, who came to power in 1967.
Before entering politics Mr Ping was a career diplomat who served as the chairman of the African Union Commission.