Supporters of the man who narrowly lost last month's Mexican presidential election, Andres Manual Lopez Obrador, have blocked offices of three foreign banks in an effort to demand a full recount of the vote.

Demonstrators in Mexico City blocked the offices of U.S.-based Citigroup's Mexican unit, Banamex, as well as the British bank HSBC and Spain's Bancomer.

Mexican electoral officials Wednesday were to begin a partial recount of votes from the July 2 election. The nation's top electoral court ordered a recount in nine percent of Mexico's 130,000 voting stations.

Mr. Lopez Obrador and his supporters are demanding a full recount of last month's election, in which he lost to conservative rival Felipe Calderon by six-tenths of one percent.

The electoral court has until September 6 to officially declare a president-elect.


Some information for this report was provided by AFP, AP and Reuters.