Guardian News and Media/Mexico City

A 20-year-old Mexican beauty queen has died in a gun battle between soldiers and the suspected drug traffickers she was travelling with.

The body of Maria Susana Flores Gamez was found on Saturday near an assault rifle on a rural road in a mountainous area of the drug-plagued state of Sinaloa, the chief state prosecutor said.

It was unclear if she had used the gun. “She was with the gang of criminals, but we cannot say whether she participated in the shootout,” said the state prosecutor, Marco Antonio Higuera.

Flores Gamez was voted Woman of Sinaloa 2012 in a beauty pageant in February.

In June, the model lost out in the state beauty contest, the winner of which competes for the title Miss Mexico title, and the chance to represent the country in the international Miss Universe contest.

Higuera said Flores Gamez had been travelling in one of several vehicles that engaged soldiers in an hours-long chase and running gun battle on Saturday near her native city of Guamúchil in Sinaloa, home to Mexico’s most powerful drug cartel.

Higuera said two others were killed and four of the drug gang were detained. The shootout began after the gunmen opened fire on a Mexican army patrol. They were cornered at a safehouse in the town of Mocorito.

Some of the group escaped and the gunbattle continued along a nearby road, where the gang’s vehicles were eventually stopped. Six vehicles, drugs and weapons were seized.

It was at least the third time a beauty queen or pageant contestants have been linked to Mexico’s violent drug gangs.

The theme was made the subject of a critically acclaimed 2011 movie, Miss Bala.

Higuera said Flores Gamez’s body has been given to relatives for burial.

“This is a sad situation,” Higuera told a local radio station. “She had been enrolled in media courses at a local university, and had been modelling and in pageants since at least 2009.”

Javier Valdez, the author of a 2009 book about drugs ties to beauty pageants, entitled Miss Narco, said: “This is a recurrent story. There is a relationship, sometimes pleasant and sometimes tragic, between organised crime and the beauty queens, the pageants, the beauty industry itself.

“It is a question of privilege, power, money, but also a question of need,” said Valdez. “For a lot of these young women, it is easy to get involved with organised crime, in a country that doesn’t offer many opportunities for young people.”