US raises security level at military bases in aftermath of Isis-inspired Texas gun attack

The step has been taken for the first time in four years

A map issued by the Pentagon aims to prove that the self-declared IS caliphate has lost 25 per cent of its territory since its big advances last year (AP) (AP)

The US military has increased security at its bases in the US amid growing anxiety about the danger of Isis and other threat concerns.

The Pentagon announced on Friday that it was raising the security level for the first time in almost four years because of threats both within the US and abroad

Army Colonel Steve Warren, a spokesman, told reporters that the decision was based not on any specific threats but rather a broader security climate.

This included the attack last weekend in Texas of a community centre that was hosting an exhibition of images of the Prophet Mohamed.

Col Warren said the heightened security level would require more bag checks at military bases and posts, possibly leading to longer queues and traffic jams in some places, Reuters said.

He said the last time security was raised to an elevated level at bases across the United States was on September 11, 2011, the anniversary of the 2001 attacks on the Pentagon and the World Trade Centre towers.

The higher levels of force protection are Charlie and Delta.