Offline José Pimentel's neighbors knew him as a laid-back, polite guy who would help building residents bring in groceries. Online, Pimentel cut a very different figure. He posted his belief in jihad and support of al-Qaida on his website trueislam1.com and other blogs. But this online radical posturing, the NYPD claims, had recently crossed the line into action. 

Pimentel, a U.S. citizen originally from the Dominican Republic, is accused of plotting to bomb police and post offices in New York City as well as planning to attack U.S. troops returning home. Pimentel is in police custody after an arraignment Sunday on numerous terrorism-related charges.

Pimentel of Manhattan was described by Mayor Michael Bloomberg at a news conference as "a 27-year-old al-Qaida sympathizer" who was motivated by terrorist propaganda and resentment of U.S. troops in Afghanistan and Iraq. Police Commissioner Raymond Kelly said police had to move quickly to arrest Pimentel on Saturday because he was ready to carry out his plan.

This is just another example of New York City because we are an iconic city ... this is a city that people would want to take away our freedoms gravitate to and focus on.

- Michael Bloomberg, Mayor of New York City

"He was in fact putting this bomb together," Kelly said. "He was drilling holes and it would have been not appropriate for us to let him walk out the door with that bomb."

Ten years after 9/11, New York remains a prime terrorism target. Bloomberg said at least 14 terrorist plots, including the latest alleged scheme, have targeted the city since the Sept. 11 attacks. No attack has been successful, however. Pakistani immigrant Faisal Shahzad is serving a life sentence for trying to detonate a car bomb in Times Square in May 2010.

Kelly said Sunday that Pimentel was energized and motivated to carry out his plan by the Sept. 30 killing of al-Qaida's U.S.-born cleric Anwar al-Awlaki.

"He decided to build the bomb August of this year, but clearly he jacked up his speed after the elimination of al-Awlaki," Kelly said.

Pimentel was "plotting to bomb police patrol cars and also postal facilities as well as targeted members of our armed services returning from abroad," Bloomberg said.

New York police had him under surveillance for at least a year and were working with a confidential informant; no injury to anyone or damage to property is alleged, Kelly said. In addition, authorities have no evidence that Pimentel was working with anyone else, the mayor said.

"He appears to be a total lone wolf," the mayor said. "He was not part of a larger conspiracy emanating from abroad."

Just a Normal Guy

Pimentel's mother, Carmen Sosa, spoke to Fox News Latino Saturday night.

"In reality he didn't seem bad. He's a person that's totally calm," Sosa said. ""What can I tell you, I'm his mother. I don't know anything. I'm coming from the court now. I don't know anything."

Neighbors that lived in and around Pimentel's Harlem apartment tell Fox News Latino they had mixed feelings about the man they lived next to.

Joseph Mateo knew him for about two years. He said Pimentel never mentioned anything about attacking America or revealing hateful thoughts.

"I was introduced to him by my girlfriend. But I would never had thought he was like that. Never ever. I just thought he was a regular Muslim person. I'm just still shocked and astonished by the whole situation," Mateo said.

Carlos Martínez, 21, said they would play pickup games in the summer at Riverbank State Park, located right down the block.

"It caught me by surprise. I wouldn't expect that from him," Martinez said. "He was always like a laid back guy. He used to go play ball. He would work out in the morning I'd see him when I used to go work out. He was always in that little corner. Socializing with the people that live across the building."

Alexis Smith, 22, who lives in an apartment in the same building as Pimentel, said she was shocked that he was a suspect in a terrorist plot.

"He was always very courteous to us," she said, adding that Pimentel helped her carry groceries and luggage into the building.

Arraignment

At Pimentel's arraignment, his lawyer Joseph Zablocki said his client's behavior leading up to the arrest was not that of a conspirator trying to conceal some violent scheme. Zablocki said Pimentel was public about his activities and was not trying to hide anything.

"I don't believe that this case is nearly as strong as the people believe," Zablocki said. "He (Pimentel) has this very public online profile. ... This is not the way you go about committing a terrorist attack."

Pimentel, also known as Muhammad Yusuf, was denied bail and remained in custody. The bearded, bespectacled man wore a black T-shirt and black drawstring pants and smiled at times during the proceeding. His mother and brother attended the arraignment, Zablocki said.

Pimentel is accused of having an explosive device Saturday when he was arrested, one he planned to use against others and property to terrorize the public. The charges accuse him of conspiracy going back at least to October 2010, and include first-degree criminal possession of a weapon as a crime of terrorism, and soliciting support for a terrorist act.

Bloomberg said at the news conference that Pimentel represents the type of threat FBI Director Robert Mueller has warned about as U.S. forces erode the ability of terrorists to carry out large scale attacks.

"This is just another example of New York City because we are an iconic city ... this is a city that people would want to take away our freedoms gravitate to and focus on," Bloomberg said.

Kelly said a confidential informant had numerous conversations with Pimentel on Sept. 7 in which he expressed interest in building small bombs and targeting banks, government and police buildings.

Pimentel also posted on his website trueislam1.com and on blogs his support of al-Qaida and belief in jihad, and promoted an online magazine article that described in detail how to make a bomb, Kelly said.

Among his Internet postings, the commissioner said, was an article that states: "People have to understand that America and its allies are all legitimate targets in warfare."

The New York Police Department's Intelligence Division was involved in the arrest. Kelly said Pimentel spent most of his years in Manhattan and lived about five years in Schenectady. He said police in the Albany area tipped New York City police off to Pimentel's activities.

Asked why federal authorities were not involved in the case, Manhattan District Attorney Cyrus R. Vance Jr. said there was communication with them but his office felt that given the timeline "it was appropriate to proceed under state charges."

About 1,000 of the city's roughly 35,000 officers are assigned each day to counter-terrorism operations. The NYPD also sends officers overseas to report on how other cities deal with terrorism. Through federal grants and city funding, the NYPD has spent millions of dollars on technology to outfit the department with the latest tools — from portable radiation detectors to the network of hundreds of cameras that can track suspicious activity.

Based on reporting by the Associated Press.

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