lived in El Paso , the State Department said . The third victim , found dead in a separate vehicle , was identified as the husband of a Mexican employee of the consulate . His wife was not traveling with him , but two of their children in the car were wounded , officials said . All the victims had left a birthday party at the consulate Saturday before they were attacked , Reyes and State Department spokesman P.J. Crowley said Monday . The slain couple , Arthur Redelfs , 34 , and Lesley Ann Enriquez , 35 , were on their way home to El Paso , Crowley said . Redelfs was a 10-year veteran of the El Paso County Sheriff 's Office , according to Jesse Tovar , a spokesman for the department . Reyes said the attackers may have been confused because both groups of victims were traveling in similar-looking vehicles . Redelfs and his wife were in a white late-model Toyota RAV4 SUV . The third victim , Jorge Alberto Salcido Ceniceros , was driving a late-model white Honda Pilot , the mayor said . Salcido , 37 , was a state police officer who was
Mexico City , Mexico -LRB- CNN -RRB- -- Authorities believe assassins targeted a pregnant woman and two other people connected with a U.S. consulate who were killed in drive-by shootings over the weekend , Ciudad Juarez Mayor Jose Reyes Ferriz said Monday . The killings were carried out by a local gang , known as Los Aztecas , that is allied with the Juarez Cartel , Reyes told CNN . No arrests had been made by Monday afternoon . `` We know that the U.S. citizens were targeted , '' Reyes told CNN , saying a police officer saw gunfire from a car directed at the Americans ' car . `` We know they were chasing them . We know they wanted to kill them . '' Two of the victims were a four-months-pregnant employee of the consulate in Juarez and her U.S. citizen husband who was a jailer in nearby El Paso , Texas , U.S. and Mexican officials said . The couple 's 10-month-old child , who was in the vehicle , was not injured , Reyes and other officials said . The child has been turned over to U.S. consular officials , Reyes said . The couple