HW Pick: The Chelsea Explosion, A Homemade Device Explodes (Update)

A street-corner Chelsea explosion that law enforcement sources said was caused by an intentionally detonated improvised device in the busy Chelsea neighborhood of Manhattan sent shrapnel flying into pedestrians Saturday night, injuring at least 29 people, including one person believed to be in serious condition. Become a Harlem Insider! Sign-Up for our Newsletter *Select list(s)…