Revealed: The Mexican girls as young as 16 being trained as hitwomen for drugs cartels

Looking slightly terrified and bowing her head in shame, one slender, young girl hesitated before announcing to waiting media that she was a 'hit woman.'

Maria Celeste Mendoza is only 16, but was among 10 suspected gang members, including three other teen girls and two young women, arrested this week by police after a shootout with authorities in central Mexico.

Sadly she is one of the growing ranks of young people working for the country's drug cartels.

Girls and their guns: Suspected members of the Zeta cartel, among them two teens who were told only to show their backs, are presented to the media in Guadalajara

With her face hidden, the girl from the northe border state of Tamaulipas, described how she had been trained to use Kalashnikov assault rifles and other weapons by the Zetas, one of Mexico's most brutal gangs.

In a listless drawl, Mendoza said she was paid 12,000 pesos ($1,000) for two weeks' work, more than three times the national average.

Although she said she was trained as a hitwoman, it was unclear if she had killed anyone yet.

As is customary in Mexico, she and the other suspects were paraded in front of the media by police after their capture in San Cristobal de la Barranca, near the country's second city, Guadalajara.

Haul: All ten suspected gang members and their ample arsenal were paraded in front of waiting media after the shootout

Rising youth unemployment, easy access to drugs and the quick cash cartels offer recruits are all blamed for felling the delinquency that has cast a shadow over Mexico's future.

'Organised crime has become a job provider for a section of the population who don't have a lot of other options,' said Victor Clark-Alfaro, director of the Binational Center for Human Rights in Tijuana on the Mexican border with Califoia.

'Since 2000, the age at which people start getting mixed up in organized crime has fallen,' he added. 'And in the last few years, the age has dropped to about 17 or 18.'

Detailed figures on the role of minors in the cartels are scarce, but newspaper Reforma said the number charged with involvement in organised crime jumped to 214 last year from 8 in 2007, citing data from the attoey general's office.

Problem: Rising youth unemployment, easy access to drugs and the quick cash cartels offer recruits are all blamed for felling the delinquency that has cast a shadow over Mexico's future

The arrest of Mendoza and another 16-year-old girl with her, Isela Sandoval, is part of the trend.

Sandoval also said she had been trained as a hitwoman but that she had not killed anyone yet, according to Mexican media reports.

Around 40,000 people have died in escalating drug-related violence since President Felipe Calderon sent in the army to try to crush the cartels at the end of 2006.

Although authorities have arrested a number of teenage hitmen in the past few years, it is highly unusual for women to work as killers for drug gangs, said Clark-Alfaro.

'This may just be an isolated case. But it may mean a new patte is emerging in the world of organised crime,\" he said.

Those who graduate toward the cartels can expect a brutal schooling from their new teachers, according to the testimony of Miguel Ortiz Miranda, a member of La Familia cartel captured last year, whose interrogation later surfaced on Youtube.

In graphic detail, he calmly described how new assassins were quickly put to the test with selected victims.

'We made (the new ones) kill them, and slit their throats and quarter them and all that. So that the new people would lose their fear of cutting an arm or a leg,' he said.

Others end up as drug dealers, fixers or watchmen but those safer jobs do not always pay as well, according to Beatriz Heandez, 21, one of the other women arrested with Mendoza, who said she eaed 4,000 pesos every two weeks as a look-out.

Last December, Mexican soldiers captured suspected drug gang hitman Edgar Jimenez, known as 'El Ponchis,' a 14-year-old U.S. citizen who the army said had admitted killing several people while under the influence of drugs.

The vast quantities of narcotics moving across the country toward the lucrative markets of Europe and the U.S. have helped to tu Mexicans onto drugs earlier than before.

'Kids are starting to take drugs younger and younger,' said Alberto Islas, a security expert at consultancy Risk Evaluation.

'A decade ago, the average age was 14, now it's 10. This has the effect of lowering their perception of risks.'

Coupled with the fact that youth unemployment is now double what it was 10 years ago - in a country whose growing population is one of the youngest in the Americas - the trends present the cartels with a rich source of cheap labour.

'Young folk are recruited because they're potentially more aggressive and less likely to care about the consequences than adults. They'll take more risks,' said Clark-Alfaro.

He said it is often a short career with the attoey general's office calculating that young men who get mixed up in organised crime will, on average, be dead within three or four years.

The Network for the Rights of Children in Mexico (REDIM), an advocacy group, says some 30,000 children are believed to work for criminal gangs in Latin America's No 2 economy, where delinquency is often blamed on high drop-out rates at school.

But even those who remain in the classroom are far from safe from the allure of drugs, guns and crime.

A 2009 govement survey of some 55,000 secondary schoolchildren in five Mexican cities showed more than one in five had seen classmates carry a weapon and that one in eight would sell marijuana for cash if a friend egged them on.

With Mexico struggling to clean up its justice system or create more decent jobs, some young people see gangland murders as a real career option.

'This is about the impunity here,' Islas said. 'Because of it, the perception of risk attached to committing this kind of crime is very low. Murders are not solved in Mexico.'