Updated

Costa Rica's foreign minister says his country worries about neighboring Nicaragua building a canal because it would affect rivers along their shared border.

Enrique Castillo says that even if the canal is built along Lake Nicaragua, it would affect the riverbeds at the San Juan River, which runs along their border, and the San Carlos River in northern Costa Rica.

Castillo said Wednesday that Costa Rica will wait for Nicaragua to define the canal's route before raising its concerns with the Nicaraguan government.

Earlier this month, Nicaragua's National Assembly voted to grant Hong Kong-based HK Nicaragua Canal Development Investment Co. a 50-year concession to study, then possibly build and run the canal.

A first proposal says it would run through Lake Nicaragua, the country's primary source of fresh water.