The police informed the paramilitary Border Security Force officials who raised the issue with the Pakistani Rangers.

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The local commander of the Indian Border Security Force, KC Sharma, told the BBC it was now up to Delhi and Dhaka to sort out the problem.

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The new federal plan, developed by the departments of Justice and Homeland Security, calls for doubling the number of border security task force teams and moving a significant number of other federal agents, equipment and resources to the border.

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Border Force chief Brian Moore said security would not be compromised but staff would be "implementing our well-rehearsed plans" in July and August.

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The UK's border force said this was partly down to improved security measures and fraud checks.

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Last week, Eritrean President Isaias Afewerki said in a letter to the Security Council that it had lost credibility by failing to force Ethiopia from the border town of Badme, which was awarded to Eritrea by the boundary commission.

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Mr Moore told the BBC News Channel the Border Force aimed to keep disruption to a minimum but "would not compromise on the safety and security of the UK".

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