In a separate incident the husband of a Mexican consulate employee was killed while driving through the city, one of the world’s most violent. According to media reports, his two children were injured in the attack.
On Sunday Mike Hammer, the White House National Security Council spokesman, said Barack Obama, US president, was “deeply saddened and outraged” by the news of the killings.
Mexico’s foreign ministry issued a statement condemning the murders and promised to work with the US government to investigate the crime. “Mexican authorities will work tirelessly to throw light on the circumstances surrounding the crime,” it said.
Read more here: US citizens shot dead by Mexican drug gangs