Cops immediately released a woman carrying two kilos of cocaine through Mexico City airport when they spoke to El Chapo's son and he said she was his girlfriend, reports claim.

A national security source told Mexican outlet La Silla Rota that the incident took place a week after the government botched the arrest of Ovidio Guzmán López at his home in Culiacán, Sinaloa, on October 17.

The woman, whose name was withheld, landed in Benito Juárez International Airport on a flight from a South American country and was scheduled to board a connecting flight to Culiacán before she was detained after immigration and Federal Police agents located at least two kilos on her clothing.

Upon being busted, the source added, the woman asked one of the arresting agents to make a phone call.

Ovidio Guzmán López allegedly arranged the release of a woman he said was his 'girlfriend' in October after she was busted with two kilos of cocaine at Benito Juárez International Airport in Mexico City. A national security source told Mexican outlet La Silla Rota the incident took place a week after Guzmán López was let go by the government after security forces were attacked by the Sinaloa Cartel in Culiacán

A woman who was identified as the 'girlfriend' of Ovidio Guzmán López was reportedly released after he spoke to the officer who was in charge of the shift tour at the airport in Mexico City last month

The person on the other line allegedly was Guzmán López, the son of Joaquín 'El Chapo' Guzmán, who told her that he wanted to speak with the officer who was in charge the shift tour at the airport police command center.

After a quick phone conversation, the woman was released because she was Guzmán López's 'girlfriend.'

La Silla Rota's source did not reveal how the woman's release was processed.

At the time of the woman's arrest, the national security source said, the arresting agents should contacted the National Institute of Migration and Federal Police as well as the Attorney General's office and the Interpol to check the database system to check if the woman had an international criminal record.

Ovidio Guzmán López (left), along with his brothers, is believed to be a leader in the Sinaloa Cartel ran by his father, Joaquín 'El Chapo' Guzmán, (right), before he was jailed in the US

However, none of the agencies were contacted.

DailyMail.com reached out to the Attorney General's office for comment.

If reports of the woman's release are true, it would cast another dark cloud over the Mexican government's failed attempt to arrest Guzmán López in October.

The government was responding to a request from the United States for Guzmán López's arrest for extradition on September 13. On October 9 a special Mexican army anti-drug unit traveled from Mexico City to Culiacán to prepare before launching its mission October 17.

But authorities were attacked as they descended on a large home where Guzmán López had been located.

Government forces were outmaneuvered by the Sinaloa cartel, who responded with a war-like assault that was finally called off after Guzmán López pleaded with his brother Iván Archivaldo Guzmán in exchange for his release.

The gunfight left 13 people dead across the streets of Culiacán.