The head of Mexico's National Security Commission is stepping down after a little more than a year in the post, the government said, confirming press reports.

Manuel Mondragon will officially announce his resignation on Tuesday, Government Secretary Miguel Angel Osorio Chong said on Twitter.

Osorio Chong, the No. 2 official in the Mexican government, said he accepted Mondragon's request "to withdraw from the operational field and become part of strategic planning tasks."

The secretary thanked Mondragon for his "efficient and patriotic work" as chair of the commission, which was created by President Enrique Peña Nieto's administration to coordinate the activities of the Federal Police and other law enforcement agencies.

Mondragon, a surgeon who holds the rank of rear admiral in the navy medical corps, served in several federal posts prior to taking charge of the National Security Commission.

He is also a former police chief of Mexico City.

Peña Nieto took office in December 2012 vowing to bring a new approach toward curbing the violence, much of it drug-related, that claimed more than 100,000 lives during the administration of Felipe Calderon.

But official statistics released earlier this month show that more than 21,000 homicides were reported in the first 14 months of Peña Nieto's government, just slightly fewer than the 21,206 murders documented in the initial 14 months of Calderon's term. EFE