(From the FT.com) Three people with links to the US consulate in the Mexican border city of Ciudad Juárez were gunned down at the weekend by “drug cartel hit teams”, according to a US official. A consulate employee and her husband, both US citizens, were murdered while driving in the violent border city, which neighbors El Paso, Texas. Their baby daughter, who was sitting in the back seat, survived the attack.

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