NEW YORK (AP) - It's still not clear who was behind an explosion last night in New York City that injured 29 people.
Mayor Bill de Blasio called it an "intentional act" but declined to call it terrorism.
A law enforcement official says the blast that rocked a bustling Chelsea neighborhood appeared to have come from a construction toolbox in front of a building. The official also tells The Associated Press that a second object found four blocks from the blast scene appeared to be a pressure cooker attached to wiring and a cellphone.
The Fire Department said 24 people were taken to hospitals with injuries. One person received a puncture wound that was considered serious. The other injuries were described as scrapes and bruises.
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