New York bombing: Investigators search for suspects, motive

A day after a bombing injured 29 people in a New York City neighborhood, surveillance videos show the same man near the site of the explosion and another location where a pressure-cooker device was found four blocks away, multiple local and federal law enforcement sources told CNN.

Saturday's explosion shook New York City's Chelsea neighborhood, packed with restaurants, subway stations, shops, businesses and art galleries, and sent panicked people scrambling for cover. Police continued to scour the area on Sunday for clues about who was responsible for the explosion and a motive.

A few blocks away from the blast site and shortly after the explosion occurred, investigators found one possible lead: a pressure cooker, with dark-colored wiring sticking out, connected by silver duct tape to what appears to be a cellphone, officials said.

3 attacks on US soil

By Sunday morning, 26 people who had been admitted to hospitals were released as city officials appealed to the public for help in finding those responsible. Authorities cordoned off the street where the explosion occurred, south of Midtown in western Manhattan.

The blast occurred on the same day an explosion went off near a Marine Corps charity run in New Jersey and a man stabbed nine people at a Minnesota mall, leaving many across the country on edge. Authorities are investigating all three incidents as possible terror acts.

New York explosion: What we know -- and don't know

The Department of Homeland Security is actively monitoring and participating in the investigations in New York and New Jersey. Investigators found similarities between the explosives used in both states, according to multiple law enforcement officials, but authorities said they have not concluded the incidents are linked.

"We do not have any specific evidence of a connection, but that will continue to be considered," New York City Mayor Bill de Blasio said. "We're not taking any options off the table."

In New York, law enforcement officials and the mayor said that without knowing who's responsible or what the motive was, it's too soon to call the Saturday bombing a terror attack.

"We know it was a very serious incident, but we have a lot more work to do to be able to say what kind of motivation was behind this," de Blasio told reporters Sunday. "Was it a political motivation? Was it a personal motivation? We do not know that yet."

Suspicious device found nearby

The blast occurred around 8:30 p.m. at 23rd Street between 6th and 7th Avenues. Investigators believe the blast was caused by an explosive device in or near a dumpster, a law enforcement source told CNN. Four blocks away on 27th Street, a pressure-cooker device was found with a piece of paper with writing on it close by, officials said.

Surveillance video shows a man dragging what appears to be a duffel bag with wheels near the site of the West 23rd street explosion about 40 minutes before the blast, according to multiple local and federal law enforcement sources.

A device at a second location in Chelsea appears to be a pressure cooker, according to multiple local and federal law enforcement officials.

About 10 minutes later, surveillance video shows the same man with what appears to be the same duffel bag on West 27th street, multiple law enforcement sources said.

In the video, the man leaves the duffel bag where police later found the unexploded pressure cooker. After he leaves, the video shows two men removing a white garbage bag believed to contain the pressure cooker from the duffel bag and leave it on the sidewalk, according to a senior law enforcement official and another source familiar with the video.

Investigators have not determined if those two men are connected to the man with the duffel bag on both streets, the sources said.

The device was transported to the NYPD Bomb Squad facility at Rodman's Neck Range in the Bronx.

NYPD and FBI Bomb technicians rendered the device safe. A forensic examination of the device and its components will be conducted at the FBI Laboratory at Quantico, Virginia.

'I could feel it in my chest'

As investigators combed through surveillance video for clues, police officers and federal agents searched the streets with flashlights, robots and dogs early Sunday to ensure there were no other devices in the area.

Authorities cordoned off the street where the explosion occurred. A small crowd watched from behind police tape Sunday as investigators gathered at the blast site. Some onlookers saidresidents who live on the block still hadn't been allowed to return to their homes.

Danilo Gabrielli, 50, was watching TV at his 23rd Street apartment about a block away from the explosion site when he heard the blast. He rushed to see what had happened and found a chaotic scene.

"We smelled something, like an intense sulfur smell, and saw smoke coming out of this building. I saw pieces of metal -- not large, but not small either. A few friends of mine saw glass there."

Gabrielli said "the entire neighborhood is real scared."

News Courtesy: www.cnnn.com