Mexican federal police have arrested Jesus Enrique Rejon Aguilar, a presumed leader and one of the founders of the Zetas cartel.

He was detained in Atizapan de Zaragoza in the state of Mexico, which contains Mexico City.

El Mamito, as he is also known, was captured on July 3 and was among the most wanted criminals in Mexico and the Unites States, according the Secretariat for Public Security (SSP), El Universal reported.

Rejon Aguilar, who is also wanted by the U.S. Drug Enforcement Administration, had offered a reward of five million dollars for information leading to his arrest.

Rejon Aguilar is the third in command within organization, under orders from Heriberto Lazcano and Miguel Angel Trevino Morales, who go by the aliases El Lazca and El Z-40.

Rejon Aguilar was captured in an operation in which no shots were fired, according to SSP.

He is being investigated in part for crimes against health and links to a an attack against agents of the U.S. Immigration and Customs Enforcement on February 14, 2011 in Santa Maria, San Luis Postosi, the location where agent Jaime Zapata died.

Rejon Aguilar was formerly an agent withing the Office of the General Prosecutor (Procuraduria General de la Republica) and deserted in 1999, according to the report.

At the time he formed one of the Group of 14, who founded the Zetas, the armed arm of the Gulf Cartel.