"These two young people have fallen in love with Peru, " Jose Luis Silva, Peru's tourism minister, told CNN on Tuesday.

CNN: STORY HIGHLIGHTS

Jamie Neal and Garrett Hand are heading upstream in a small boat on a jungle river, said Jose Luis Silva, Peru's minister of tourism and commerce.

CNN: STORY HIGHLIGHTS

Jose Claudio Ribeiro da Silva and his wife, Maria do Espirito Santo da Silva, were shot dead in a forest reserve in the northern state of Para.

BBC: Amazon murders: Two convicted of 2011 Brazil killings

Brazil under the government of Jose Inazio Lula Da Silva took advantage of the country's economic growth (which was the cumulative result of years of economic and developmental polices that began before Da Silva took office) to flex its muscles in the regional and international arena.

CENTERFORSECURITYPOLICY: A closer look at Brazil's foreign policy

The mainstream media, who overwhelmingly supported Jose Serra, gave Ms Silva ample coverage - not because they agreed with her policies or wanted her to win, but because they hoped she would take votes away from Dilma Rousseff.

BBC: Green Party votes up for grabs in Brazil's election

Jittery Brazilians did not like opinion polls showing Mr da Silva with a big lead over Jose Serra, the markets' preferred candidate.

ECONOMIST: Latin American markets