The fiasco reached crisis proportions when a U.S. Border Patrol agent was slain in Arizona near the border in December 2010, and two of the missing weapons were discovered at the scene of the killing.

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Mostly missing from the scene is the expenses issue which so dominated the last parliament.

BBC: Time to salute the post-2010 election Parliament

The jury heard there should have been two 30mph speed limit signs near the scene but one was missing and another was not visible after being knocked into undergrowth.

BBC: Blackpool fatal crash driver 'used excessive speed'