police

Supporters began calling him Batman, in English, when crime rates dropped precipitously in Mexico City during his tenure as police chief.

"The CPS will continue to work with the Home Office and police forces to prosecute those who have no right to be in the country."

He said his client had not realised for much of the incident that he was dealing with police.

The troops are now patrolling the capital in larger groups and will be accompanied by police from the Washington Metropolitan Police Department, according to a person familiar with the security arrangement.

Officials have confirmed that an investigation will be taking place over the next few weeks, with police already gathering evidence from the scene.