A police bomb squad found and disarmed a bomb Tuesday at a Buenos Aires theater that will host a conference featuring former Colombian President Alvaro Uribe and several other prominent speakers, Argentine judicial officials told Efe.

The bomb was found in "a lighting apparatus" at the Teatro Gran Rex during a routine security inspection ahead of the international leadership conference.

Uribe, who governed Colombia from 2002 to 2010, is scheduled to speak Wednesday on the topic of "The Transformation of Colombia" at the WOM Leadership Symposium 2012, the event's Web site says.

Manuel Estiarte, director of external relations for the Barcelona soccer club, Irish consultant Kevin Kelly and Canada's Guy Caron, former director of Cirque de Soleil, are among the other scheduled speakers.

Corrientes avenue, one of the busiest streets in Buenos Aires, was closed down by police after the discovery of the bomb at the theater.

The bomb was designed so it could be detonated using a cell phone, officials said.

Police are still inspecting the theater, which is in an area that is home to many restaurants and other businesses. EFE