Faisal Shahzad, the 30-year-old arrested for allegedly attempting to detonate a car bomb in Times Square, pleaded guilty on Monday to crimes in connection with the attempt.

Shahzad entered a surprise guilty plea this afternoon, according to reports, for his attempted May 1 attack in the heart of Manhattan.

The Pakistani-born naturalized American citizen said he planned to plead guilty to all charges against him, according to ABC News.

Shahzad was detained less than 48 hours after his attempted attack, but Republicans criticized the Obama administration for having decided to treat him as a criminal suspect, fearing that rights he might have been afforded could have prevented interrogators from gaining valuable intelligence.

Shahzad was initially said to be a "lone wolf" and not connected to any foreign terrorist organization, but the federal government later revealed he had been working with the Pakistani Taliban to prepare the attack.