New York Bomb attack in a subtle neighborhood injured 29 people, the state governor confirmed the news that is was a terror attack but the motive behind is still unknown also no terrorist organization have claimed or taken responsibility behind this act.

Heavily armed police and National Guard soldiers deployed throughout New York as the city of 8.4 million prepared to welcome world leaders at the UN General Assembly on Monday.

The attack happened late Saturday in Chelsea, one of Manhattan's most fashionable districts packed with bars, restaurants and luxury residential buildings.

"A bomb exploding in New York is obviously an act of terrorism, but it's not linked to international terrorism," New York Governor Andrew Cuomo told reporters on Sunday as he visited the crime scene.