Peru says it is sending a protest note to Chile over alleged arms sales to Ecuador.
Peruvian officials say they have "irrefutable proof" Chile sold grenades, missiles and mines to Ecuador in 1995 in violation of an international ban on arms sales during a brief border war between Peru and Ecuador.
Chilean President Ricardo Lagos Saturday voiced surprise over the announcement and says his government is waiting to receive the note before it responds to the charge.
Santiago has previously said it only made an authorized sale of bullets to Ecuador in September 1994.
Chile was one of four guarantors of peace deals in 1942 and 1998 that ended border wars between Ecuador and Peru.
Some information for this report provided by Reuters, AP and AFP.