Pressure cooker device removed from NYC street after robot inspects it

UPDATE: Sunday, Sept. 18, 12:45 p.m. ET: NYPD confirms device found on West 27th Street has elements of an improvised explosive device. Explosion on West 23rd Street has been called a "bombing."
A robot belonging to NYPD was sent in to inspect a "suspicious package" on the sidewalk in Chelsea, Manhattan early Sunday morning — just blocks away from the site of an earlier explosion which injured 29 people.
Law enforcement sources described the package on West 27th Street as a pressure cooker