Mexico Mexico - Yvette Martinez, 21, Brenda Cisneros, 23, Nuevo Laredo, 17 Sept 2004

Mom of Five

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Aug 31, 2008
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Brenda Cisneros, 23, was also abducted in September of 2004

On September 17, 2004, Yvette Martinez and her friend, Brenda Cisneros, crossed the border from Laredo, Texas to Nuevo Laredo, Mexico to celebrate Brenda's birthday by going to a concert. Neither of them came back.

Yvette's stepfather, William Slemaker, said a toll ticket showed the women crossed the border at 11:11 p.m. A relative saw them sometime after that at the concert. Slemaker also said that a friend spoke with the two women by cell phone around 4 a.m., about getting breakfast as they headed toward the international bridge back to Texas. But there's been no word since.

Because the authorities in Nuevo Laredo didn't seem to be doing much about the case, Slemaker decided to take matters into his own hands. He traveled numerous times to Nuevo Laredo in search of his missing stepdaughter. On October 8, 2004, he found Yvette's 2001 white Mitsubishi Galant at a Nuevo Laredo tow yard. The stereo and battery were gone and the rear bumper had paint on it. But that's where the trail goes cold.

Victims of Mexico's Spreading Violence?
Slemaker fears that his stepdaughter and her friend have become caught up in a new wave of violence that's been spreading through Mexico -- especially along the border areas.

Mexico's drug war has begun to move across the border, creeping into the United States. Mexico's most powerful drug cartels are fighting territorial battles over control of the border, spawning a terrorizing wave of violence.

But fighting isn't the only thing erupting in the streets of Mexico. Mexico's lawlessness - an outbreak of kidnappings for ransom, brutal gunfights among rival drug cartels and escalating violence -- has now crossed the border and touched many American families. Their stories are similar: Americans cross the border from Laredo, Texas to Nuevo Laredo, Mexico to celebrate birthdays, holidays or to shop or just to enjoy another culture. But, one by one, these Americans failed to return home.

Thirty-one Americans have been reported as kidnapped just across the Mexican border. According to U.S. officials, two of them have been confirmed dead, and a dozen have returned home either by paying a ransom or somehow escaping. That means 17 Americans are unaccounted for, somewhere in the Nuevo Laredo area of Mexico -- dead or alive.,2933,487904,00.html[/U

There are so many americans that are missing and disappeared in Mexico. Something needs to be done about this.

Texas Mist

Retired WS Staff
Dec 17, 2008
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Father searches for daughter who disappeared in Mexico

by Chris Sadeghi / KENS 5
Posted on March 6, 2010 at 7:03 PM
Updated yesterday at 9:23 PM

A local father is still looking for his daughter who disappeared six years ago when she crossed the border with a friend to attend a concert in Nuevo Laredo.

William Slemaker's daughter, Yvette Martinez, has not been seen since 2004 when she crossed the border to celebrate her 21st birthday with a friend. Both are still missing and Slemaker hopes to warn parents and teenagers about the dangers of crossing into Mexico during spring break.

"I would hate for another parent to go through what we went through." said Slemaker.

Slemaker and others who have lost loved ones in Mexico formed an organization to help each other cope with their losses as well as protest the violence and drug cartel south of the border.

video here


Retired WS Staff
Apr 8, 2013
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For years, Slemaker led Laredos Missing, a group for victims of the Zetas paramilitary criminal organization. He says the July 15 capture of Zetas leader Miguel Angel Treviño Morales on the outskirts of Nuevo Laredo may hold answers for many of the victims. Slemaker and others are urging American authorities to extradite the former boss to the U.S.

At the time of the disappearances, Treviño Morales was already playing a key role in the Zetas, and Slemaker believes he probably knows firsthand what happened not only to his stepdaughter in 2004, but to many more.

“He can help us find closure — not just for Americans, but for victims of this region,” he said


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Nov 11, 2013
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Bumping. Sadly I really worry if these two young women are still alive and if they are then I would most likely rather not know of what they experienced. JMO and :twocents:


Believer of Miracles
Jul 7, 2018
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The father of a Texas woman who vanished in 2004 knows what its like to go without learning the fate of a loved one for years, and even now questions remain. This September will mark 19 years since 27-year-old Yvette Martinez vanished. She was one of two young Laredo women who disappeared after a concert in Nuevo Laredo in 2004.

Her stepfather William Slemaker said she was kidnapped and murdered.

"Unfortunately, we never got justice for her," said Slemaker.
Slemaker believes a former leader of the Zetas cartel carried out the kidnapping that led to her probable death as a favor for 'an informant of the DEA'. Since 2017, when the former cartel leader was charged with other crimes, there hasn't been new movement on the case.