Surveillance Video of New York City Explosion

An explosion occurred at Chelsea, Manhattan, injuring at least 29 people on a Saturday night.

The explosion which happened at around 8:30 PM at the 23rd Street between Sixth and Seventh Avenues was said to be an international act, and is not related to terrorism.

A possible secondary device was located a few blocks away on 27th Street, between 6th Avenue and 7th Avenue, but was then removed by authorities.

Police said the device was to be detonated at the NYPD’s firing range in the Bronx.

According to ABC News, the mayor said the Chelsea explosion has no apparent connection to the explosive device that detonated in Seaside Park, New Jersey, Saturday morning. Nobody was injured in the New Jersey incident, which occurred at a time when a 5k run to benefit U.S. Marines and sailors was scheduled, but the race was delayed because so many runners had signed up.

Below is the surveillance video which shows the incident, credit to ABC News.

IN PHOTOS – Icy Blizzard Slams Central US

Ice forms on the Brooklyn waterfront in New York on Sunday, Feb. 15, 2015. An extremely cold air mass is moving into the region on Sunday night. The Brooklyn Bridge and One World Trade Center appear in the background. (AP Photo/Peter Morgan)

Reuters reported that a record-breaking cold gripped the eastern United States while an icy winter storm crippled the nation’s central states and then plowed into the mid-Atlantic, dumping snow and forcing federal offices in Washington, D.C. to close on Tuesday.

It was reported that the new storm will be followed by another arctic front, bringing frigid cold to the eastern United States by Thursday or Friday.

Kim Taylor, of Norwood, Mass., right, shovels a path in the snow in front of her home Sunday, Feb. 15, 2015, in Norwood. A storm brought a new round of wind-whipped snow to New England on Sunday, threatening white-out conditions in coastal areas and forcing people to contend with a fourth winter onslaught in less than a month. (AP Photo/Steven Senne)

People watch as ice forms on the Brooklyn waterfront in New York on Sunday, Feb. 15, 2015. An extremely cold air mass is moving into the region on Sunday night. The Statue of Liberty is in the background. (AP Photo/Peter Morgan)

A woman walks through drifting snow in Cambridge, Mass., Sunday, Feb. 15, 2015. A storm brought a new round of wind-whipped snow to New England on Sunday, threatening white-out conditions in coastal areas and forcing people to contend with a fourth winter onslaught in less than a month. (AP Photo/Michael Dwyer)

Philadelphia firefighters work the scene of an overnight blaze in west Philadelphia, Monday, Feb. 16, 2015, as icicles hang from where the water from their hoses froze. Bone-chilling, single-digit temperatures have gripped the region, prompting the closure of all parish and regional Catholic elementary schools in the city of Philadelphia. (AP Photo/Jacqueline Larma)

Snow covers parked cars on Beacon Hill in Boston, Sunday, Feb. 15, 2015. A blizzard warning was in effect for coastal communities from Rhode Island to Maine, promising heavy snow and powerful winds to heap more misery on a region that has already seen more than 6 feet of snow in some areas. (AP Photo/Michael Dwyer)

Blowing snow on the waterfront in the East Boston neighborhood of Boston partially obscures the skyline, Monday, Feb. 16, 2015. New England remained bitterly cold Monday after the region’s fourth winter storm in a month blew through. (AP Photo/Michael Dwyer)

The water fountain in Bryant Park turned in to an ice sculpture by record cold on Sunday, Feb. 15, 2015 in New York City. (Gordon Donovan/Yahoo News)

Ice forms along the shore of the Manhattan side of the East River in New York on Monday, Feb. 16, 2015. Temperatures in the city were in the single digits on Monday morning. The Manhattan Bridge is in the background. (AP Photo/Peter Morgan)