"A bomb exploding in New York is obviously an act of terrorism," Gov. "A bomb going off is generically a terrorist activity. JUST WATCHED Explosion rocks New York's Chelsea neighborhood Replay More Videos ... MUST WATCH Explosion rocks New York's Chelsea neighborhood 01:01But in New York, law enforcement officials and the city's mayor cautioned that without a known motive, it's too soon to call the bombing there a terror attack. JUST WATCHED NYC mayor: No evidence of a terror connection Replay More Videos ... MUST WATCH NYC mayor: No evidence of a terror connection 01:06New York Mayor Bill de Blasio called Saturday night's explosion an "intentional" act. But, he stopped short of calling it terrorism in the absence of evidence tying it to known terror groups.

Source: CNN September 18, 2016 20:26 UTC