"The teenagers left through the main gate, " prosecutor Jorge Sanz told local media.

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The head of the Latin American and Caribbean Unit, UNESCO World Heritage Centre, Nuria Sanz, will attend the meeting.

UNESCO: MEDIA SERVICES

The head of the Latin American and Caribbean Unit UNESCO World Heritage Centre, Nuria Sanz, will be at the meeting.

UNESCO: MEDIA SERVICES

Well-known Latin stars like Marc Anthony, Carlos Vives, Thalia and Shakira were largely ignored in favour of new artists, but Spanish crooner Alejandro Sanz also received four nominations.

BBC: NEWS | Entertainment | New faces get Latin Grammys nods

Dr Sanz worked on the paper with Josep Call, also from the Max Planck Institute of Evolutionary Anthropology, and David Morgan from the Wildlife Conservation Society and Chicago's Lincoln Park Zoo.

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Sanz received nominations for best overall album and best male pop vocal album for No Es Lo Mismo and song of the year and record of the year for the album's title track.

BBC: NEWS | Entertainment | New faces get Latin Grammys nods