NEW YORK — A would-be suicide bomber inspired by Islamic State extremists strapped on a crude pipe bomb, slipped unnoticed into the nation's busiest subway system and set the device off at rush hour Monday in a scenario that New York has dreaded for years, authorities said.
In the end, the only serious wounds were to the suspect identified as Akayed Ullah, a 27-year-old Bangladeshi immigrant and former cab driver. But the attack sent terrified commuters fleeing through a smoky passageway, and three people suffered headaches and ringing ears from the first bomb blast in the subway in more than two decades.
"This was an attempted terrorist attack," Democratic Mayor Bill de Blasio said. "Thank God the perpetrator did not achieve his ultimate goals."
The suspect had looked as Islamic State propaganda online and told investigators he acted alone in retaliation for U.S. military aggression, law enforcement officials said.
In Washington, President Donald Trump said the explosion highlighted the need to change immigration policies, including the type of family-based visa Ullah obtained to come to the U.S. in 2011. Such visas are "incompatible with national security," the Republican president said in a statement.
"America must fix its lax immigration system, which allows far too many dangerous, inadequately vetted people to access our country," said Trump, who campaigned on cracking down on immigration.
The attack near Times Square came less than two months after eight people died near the World Trade Center in a truck attack authorities said was carried out by an Uzbek immigrant who admired the Islamic State group.
Law enforcement officials said Ullah was inspired by IS but apparently did not have any direct contact with the group. Gov. Andrew Cuomo said there was no evidence, so far, of other bombs or a larger plot. He said officials were exploring whether Ullah had been on authorities' radar, but there was no indication yet that he was.