Airports raise security on US-bound flights

European airports tightened security checks on US-bound flights on Saturday after a man tried to set off an explosive device on a flight between Amsterdam and Detroit.

The Dutch National Coordinator for Counter terrorism said in a statement that US authorities had asked airlines worldwide to take additional security measures for flights to the US.

Security at Amsterdam's Schiphol Airport had been tightened, it said.

In Britain, airports operator BAA said the Department of Transport had issued a notice to all British airport operators to tighten security.

"Passengers travelling to the United States should expect their airline to carry out additional security checks prior to boarding," BAA said in a statement, adding that passengers should leave more time to check in.

In Brussels, Jacques Barrot, vice-president of the European Commission in charge of justice, freedom and security, said the EU executive was in contact with all relevant authorities to make sure rules and procedures were being followed in Europe.

"I am horrified by the attempted terrorist attack on a flight between Amsterdam and Detroit on Christmas Day," he said.

"This incident shows once again that vigilance is necessary at all times in the fight against terror."