NEW YORK — Agents with the FBI pulled over a car on a highway in Brooklyn on Sunday night and were questioning the vehicle's occupants in connection with the investigation into the New York City bombing that injured 29 people, authorities said.
Agents stopped "a vehicle of interest in the investigation" at 8:45 p.m. Sunday, according to FBI spokeswoman Kelly Langmesser
She wouldn't provide further details, but a government official and a law enforcement official who were briefed on the investigation said five people in the car were being questioned at an FBI building in lower Manhattan.
The officials spoke on condition of anonymity because they were not authorized to speak about the ongoing investigation.
No one has been charged with any crime and the investigation is continuing, Langmesser said.
The bomb that rocked a bustling Manhattan neighbourhood contained residue of an explosive often used for target practice that can be picked up in many sporting goods stores, a federal law enforcement official said Sunday, as authorities tried to unravel who planted the device and why.
The discovery of Tannerite in materials recovered from the Saturday night explosion may be important as authorities probe whether the blast was connected to an unexploded pressure-cooker device found by state troopers just blocks away, as well as a pipe bomb blast in a New Jersey shore town earlier in the day.
Gov. Andrew Cuomo, touring the site of the blast in Manhattan's Chelsea neighbourhood , known for its vibrant arts scene and large gay community, said there didn't appear to be any link to international terrorism. He said the second device appeared "similar in design" to the first, but did not provide details.
"We're going to be very careful and patient to get to the full truth here," Mayor Bill de Blasio said Sunday. "We have more work to do to be able to say what kind of motivation was behind this. Was it a political motivation? A personal motivation? What was it? We do not know that yet."
Cellphones were discovered at the site of both bombings, but no Tannerite residue was identified in the New Jersey bomb remnants, in which a black powder was detected, said the official, who spoke to The Associated Press on condition of anonymity because the official was not authorized to comment on an ongoing investigation.
Authorities said the Manhattan bombing and the blast 11 hours earlier at the site of a 5K race to benefit Marines and sailors in Seaside Park, New Jersey, didn't appear to be connected, though they weren't ruling anything out. The New Jersey race was cancelled and no one was injured.
Officials haven't revealed any details about the makeup of the pressure-cooker device, except to say it had wires and a cellphone attached to it.
Technicians in Quantico, Virginia, were examining evidence from the Manhattan bombing, described by witnesses as a deafening blast that shattered storefront windows and injured bystanders with shrapnel in the mostly residential neighbourhood on the city's west side. All 29 of the injured people were released from the hospital by Sunday afternoon.
On Sunday night, investigators examined a suspicious device found in a trash can near a train station in Elizabeth, New Jersey, that forced the suspension of service on the busy Northeast Corridor line.
Elizabeth Mayor Christian Bollwage said two men called police and reported seeing wires and a pipe coming out of the package after finding it at about 9:30 p.m. Sunday.
Earlier Sunday, a team of five FBI agents searched an Uber driver's vehicle that had been damaged in the Manhattan blast, ripping off the door panels inside as they examined it for evidence.
The driver, MD Alam, of Brooklyn, had just picked up three passengers and was driving along 23rd Street when the explosion occurred, shattering the car's windows and leaving gaping holes in the rear passenger-side door.
"It was so loud," the 32-year-old Alam said. "I was so scared. There was a loud boom and then smoke and I just drove away."
Alam said he hit the gas and tried to take his passengers to their destination in Queens, but pulled over along Madison Avenue and 39th Street. He went to a local police precinct to file a report for his insurance company and police contacted the FBI.
