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The Colombian government has announced plans to build a second transmission line linking the Pacific port city of Buenaventura to the country's electricity grid.
The move will reduce the threat of blackouts from terrorist attacks, vice president Germán Vargas Lleras said on Friday.
"We cannot continue with one electricity line to Buenaventura. We now have a backup system in process," Vargas Lleras said.
Buenaventura was left without electricity on Wednesday following a suspected FARC attack on a substation.