MEXICO CITY (AFP) - A helicopter carrying Mexican Interior Secretary Francisco Blake Mora crashed near Mexico City on Friday, media reports said. Blake was traveling between Mexico City and the neighbouring state of Morelos, according to local TV and newspaper Internet sites.The presidency said it would shortly release a statement.Blake, 45, was travelling between Mexico City and the state of Morelos just to the south, his ministry said. Mexico is locked in a brutal conflict against drug cartels that has killed 45,000 people in the last five years and Blake is a key member of President Felipe Calderon's security team.Mexico's peso weakened to 13.42 pesos per dollar on the news.