Mexican soldiers have arrested a suspect in the killings of three people linked to the U.S. consulate in Ciudad Juarez, Chihuahua state police said Monday.
Police spokesman Enrique Torres said the suspect arrested on Friday was a member of the Barrio Azteca gang.
Torres did not release the man's name, but a Chihuahua state investigator who spoke on condition of anonymity because he is not authorized to discuss the case identified the suspect as Ricardo Valles de la Rosa, 45.
Consulate employee Lesley A. Enriquez and her husband, Arthur H. Redelfs, were killed March 13 in Juarez when gunmen opened fire on their sport utility vehicle after they left a birthday party. Their 7-month-old daughter was found wailing in the back of the vehicle.
Jorge Alberto Salcido, the husband of a Mexican employee of the consulate, also was killed by gunmen after leaving the same event in a separate vehicle.
Torres said the suspect is a leader of the Barrio Azteca gang, but gave no other details. He said the suspect would be presented to the media later Monday.
U.S. and Mexican authorities say the Barrio Azteca gang works for the Juarez drug cartel and operates on both sides of the border.
Initially a Texas prison gang, Barrio Azteca expanded across the Rio Grande into Juarez in the late 1990s, U.S. authorities have said.
Last week, El Paso police and Texas state troopers arrested 25 people in a sweep of suspected gang members. Ciudad Juarez, across from El Paso, Texas, is one of the world's deadliest places. More than 2,600 people were killed last year, and another 500 so far this year in the city of 1.3 million.
Elsewhere in Mexico, at least 21 people were killed Sunday in drug violence.
In the northern state of Durango, gunmen killed 10 youths traveling in a pickup truck after they refused to stop at an illegal roadblock, state investigators said in a statement.
The youths, ages 8 to 21, were heading to the town of Los Naranjos to collect federal financial aid given to students when they were shot at and attacked with grenades. Four of the victims were siblings from one family.
Also Sunday, three gunmen died in a clash with soldiers near a park packed with families in the border city of Nuevo Laredo, across from Laredo, Texas, authorities said in a statement.
Tamaulipas state investigators said police on Sunday also found the bodies of three men who had been shot to death in the town of Miguel Aleman, about 60 miles (100 kilometers) east of Nuevo Laredo.
Tamaulipas and neighboring Nuevo Leon state have seen a surge of violence in recent weeks that authorities blame on a turf battle between the Gulf cartel and the Zetas.
In the Nuevo Leon city of Santa Catarina, three men and two women were killed in a shootout with soldiers inside a motel, the army said in a statement.
It said one of those killed was a gunmen who participated in the Nov. 5 killing of an army general who had been appointed police chief of the town of Garcia and in last week's attack against Rene Castillo, an army major and Santa Catarina's security chief.
Drug-related violence in Mexico has claimed 17,900 lives since President Felipe Calderon declared war on the drug gangs in December 2006. Powerful drug cartels have been battling not only authorities but each other for turf and drug routes.
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Associated Press writers Olga R. Rodriguez in Mexico City, Mark Walsh in Monterrey and Jorge Vargas in Nuevo Laredo contributed to this report.
