The suspect in the botched Times Square bombing told investigators that he had other targets in New York City, CBS News reports.
The new development in the case comes after prosecutors announced Faisal Shahzad's first appearance in federal court on Tuesday. Shahzad appeared in court on five felony charges related to the May 1 botched bombing, muttered one word and entered no plea.
Before his court appearance, Shahzad told investigators that he targeted other Midtown Manhattan attractions such as Grand Central Terminal and Rockefeller Center, CBS News reports.
(Scroll down to watch a "60 Minutes" video about Faisal Shahzad)
More of Shahzad's other targets included the World Financial Center near ground zero in Manhattan and some offices of the Stratford, Conn.-based Sikorsky Aircraft Corp., CBS News reports.
Sikorsky, a defense contractor, has facilities in Shelton, Conn., and Stratford, Conn.
In front of a courtroom packed with FBI agents, reporters and spectators, U.S. Magistrate James C. Francis informed a bearded Shahzad Tuesday of the charges against him in a criminal complaint, CBS News investigative reporter Pat Milton reports.
Francis read him his rights, including his right to remain silent, and warned him that anything he might say could be used against him.
Shahzad said "yes" when asked to confirm an affidavit about his finances. He was led out of court Tuesday after a 10-minute appearance. Shahzad did not enter a plea to the charges.
Assistant U.S. Attorney Randall Jackson asked that Shahzad be detained without bail. His attorney, assistant public defender Julia Gatto, agreed, saying she was not prepared to argue for bail.
Shahzad, wearing a grey sweatshirt and grey sweatpants, showed no outward emotion during the 15-minute proceeding, Milton reports. Shazad was surrounded by U.S. marshals as he was led handcuffed out of the courtroom.
Francis scheduled Shahzad's next hearing for June 1, Milton reports. At that hearing, the government must establish probable cause that a crime was committed or obtain an indictment by a grand jury.
Gatto asked during the hearing if Shahzad could be provided with halal meals in custody. She did not comment afterward.
Shahzad's court appearance came after a New York defense lawyer demanded Shahzad be brought to a courthouse; however, CBS News reports that Shahzad asked for the appearance.
The 30-year-old Shahzad has been held at an undisclosed location since his May 3 arrest on charges he abandoned a bomb-laden SUV in Times Square. Authorities say he has voluntarily waived his rights to an initial court appearance while he cooperates.
A cousin of his father calls his arrest "a conspiracy."
Shahzad, of Bridgeport, Conn., was arrested on a Dubai-bound plane at John F. Kennedy International Airport on charges he drove an SUV rigged with a homemade car bomb into Times Square two nights earlier, sending thousands of tourists into a panic on a busy Saturday night. The bomb didn't explode, and no one was hurt.
An initial appearance in court typically happens within a day or two of a suspect's arrest.
The U.S. attorney's office said Shahzad is charged with attempted use of weapons of mass destruction and attempting acts of terrorism transcending national boundaries, each carrying a maximum life term.
He's charged with using a destructive device in an attempted violent crime, punishable by up to 30 years in prison; transporting and receiving explosives, punishable by up to 10 years; and attempting to damage and destroy property with fire and explosives, punishable by five to 20 years.
Since his arrest, Shahzad "has provided valuable intelligence from which further investigative action has been taken," the U.S. attorney's office in Manhattan said in a statement Tuesday.
Authorities said shortly after Shahzad's arrest that the ex-budget analyst had admitted to driving the SUV bomb into Times Square and told authorities had received terror training during a recent five-month trip to Pakistan.
"The investigation into the attempted Times Square bombing continues," the office said.
Additional Times Square Bomb Coverage
Federal authoritieslast week and picked up three men on immigration violations who are suspected of providing money to Shahzad to help build the homemade bomb of fireworks, propane and battery-operated alarm clocks.
Officials in Pakistan have taken several people into custody, including two menof helping finance the failed plot.
CIA Director Leon Panetta and retired Gen. James Jones, President Obama's national security adviser, were in Pakistan meeting with officials there on the failed Times Square bombing and the terrorist safe havens where the suspect is believed to have received training.
In light of the attack, said National Security Council spokesman Mike Hammer, "we believe that it is time to redouble our efforts with our allies in Pakistan to close this safe haven and create an environment where we and the Pakistani people can lead safe and productive lives."
One U.S. official said the trip is not confined to the Times Square bombing issues but noted that the emphasis is on cooperation between the U.S. and Pakistan and what both countries need to do to keep pressure on the extremists in that region. The official spoke on condition of anonymity because of the sensitivity of the meetings.
Prosecutors made their announcement on the same day a lawyer wrote a Manhattan federal judge demanding that Shahzad be produced in court.
Earlier, New York attorney Ron Kuby, in a letter to the chief U.S. District Court judge in Manhattan, accused authorities of violating Shahzad's rights by "squeezing him for information" in secret.
Kuby doesn't represent Shahzad. But in the letter, he argued that federal authorities - by holding Shahzad for "an unprecedented third week of captivity" - were violating criminal procedures requiring suspects to be promptly presented in court.
"A suspect buried in the bowels of a Manhattan version of Guantanamo ... is essentially without power to compel the government to comply" with the procedures, he wrote.
Without an appearance, "there is no reason to think the waiver is voluntary," Kuby wrote.
Homegrown Terror Coverage on "60 Minutes"
Uncovering the Roots of Homegrown Terrorism
Full Segment: Homegrown Terror
Web Extra: Who Is Faisal Shahzad?
Web Extra: Could The Bomb Have Worked?
Web Extra: Eyes In The Sky
Web Extra: Al Qaeda's New Recruits