Argentina officials found a bomb in a theater in Buenos Aires where ex-Colombian President Alvaro Uribe is scheduled to speak Wednesday.

Uribe ran Colombia between 2002 and 2010. The focus of his political platform was tackling the Farc rebel group, a paramilitary guerrilla formation that had been waging a bloody insurgency for decades. 

According to multiple media reports, the explosive was found hidden in a lamp and it is believed that it could have been triggered by a cell phone.

Colombia Reports said that Argentinian press is reporting that the bomb was discovered during a routine sweep of the venue. Police in Buenos Aires are currently investigating.