Peru's foreign minister has accused Bolivian President Evo Morales of being an enemy of Peru, BBC reported.
Jose Antonia Garcia Belaunde's remarks followed Peru's withdrawal on Tuesday of its ambassador to Bolivia.
That move, on Tuesday, was a response to Mr Morales's remarks about violent clashes that have erupted in Peru over Amazon land rights.
Mr Morales described the deaths of indigenous protesters in the dispute as a genocide caused by free trade.