The Department of Homeland Security is instituting new security procedures after a passenger on a Northwest Airlines flight from Amsterdam attempted to set off a incendiary device as the plane descended for landing at Detroit Metro Airport.
The passenger, a Nigerian national, claimed to have ties with al Qaeda, officials said.
“Department of Homeland Security Secretary Janet Napolitano has been briefed on the incident aboard Northwest Airlines flight #253 and is closely monitoring the situation," said Homeland Security Press Secretary Sara Kuban.
"Passengers may notice additional screening measures put into place to ensure the safety of the traveling public on domestic and international flights. As always we encourage the traveling public to be observant and aware of their surroundings and report any suspicious behavior or activity to law enforcement officials."
The incident raises questions about how someone with an incendiary device could be able to board a plane destined for the United States.
The White House is calling the incident a case of attempted terrorism.
The suspect was subdued on the plane. He suffered burns attempting to light the device and was taken to a hospital for treatment.