U.S. prosecutors on Tuesday charged the suspect in the failed car bombing in New York's Times Square with five counts, including terrorism and trying to use a weapon of mass destruction.

Charges against Faisal Shahzad, a naturalized U.S. citizen from Pakistan, were included in a criminal complaint filed in the federal court in Manhattan.

The complaint says he confessed to buying an SUV, rigging it with a homemade bomb and driving it Saturday night into Times Square, where he tried to detonate it.

The complaint says he admitted to receiving bomb-making training in Waziristan, Pakistan.

Agents from the U.S. Department of Homeland Security arrested Shahzad at New York's John F. Kennedy International Airport late Monday night as he was attempting to board a flight to Dubai.

Shahzad had recently returned from a five-month trip to Pakistan. Pakistan's Dawn television said Tuesday that the suspect had family links in the port city of Karachi, and visited it last year.

U.S. Homeland Security Secretary Janet Napolitano has said it's "premature to rule in or out" links to international terrorism.

Shahzad had earlier said he acted alone.