The British government says the country's terror threat is taking a step down from critical.
The FBI also identified a British-based group, Stop Huntingdon Animal Cruelty, as a U.S. terror threat.
The figures will be studied to see what impact, if any, the increased terror threat has on responses from the Catholic community.
The current terror threat level has been classed severe - one level lower than the highest "critical" - since 14 August 2006.
The terror threat level on the UK Home Office website remains unchanged at "substantial, " which is the third highest of five levels.
There is no specific, credible terror threat, the agencies said.
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British police had not yet been in touch with the airline to confirm if this was actually a terror threat related to passengers on board the PIA flight, Tajwar said.
France increased its domestic terror threat level after French forces went into action in Mali on 11 January to push back militants who had captured Timbuktu and other parts of northern Mali.
Does the Obama administration on deck really feel that the threat of Islamist terror will disappear if we withdraw from Iraq?
Will Obama's transition team acknowledge that terror is merely a tactic and its threat preceded the Iraq war and runs across the deep abyss which separates political Islam from Western secular democracies?
He rallied at once to America's side, arguing rightly that the new kind of terror unleashed by Osama Bin Laden posed a threat to all nations.
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He said the bill stressed that only the threat of "serious" violence would trigger the anti-terror powers which include allowing the police to hold a suspect for longer without charge.
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