The victim was waiting at a bus stop on Ninth Avenue when the suspect accosted her, police said.
Police Commissioner Ray Kelly said the new $2.1 billion 911 system went down after it launched.
The victim, 19, was struck in the shoulder and arm and rushed to Harlem Hospital, authorities said.
Kayla Mitchell, who was believed to be homeless, was found under a tree near 14th Street.
Cops arrested Damien Hollis, 21, just one day after distributing his name and mugshot.
Nicolas Almonte, 27, is wanted in a Queens carjacking spree that sparked a wild police chase Thursday.
The victims were taken to Kings County Hospital, where one was in critical condition, authorities say.
Cops are searching for two men who stormed a Kingsbridge apartment Tuesday afternoon, police said.
Police are hunting for Damien Hollis, 21, who is suspected of attacking a 26-year-old woman last year.
Lee Samuel was accused of attacking a pair of girls in Ozone Park.
A letter labeled "Anthrax" was found at the federal courthouse in Downtown Brooklyn, a source said.
The NYPD released surveillance video of a man accused of attacking a 20-year-old woman Sunday morning.
Ten worshippers said they were making a statement against a blog post by Cardinal Timothy Dolan.
Police are looking for a man accused of sexually abusing a 9-year-old girl.
The watch was stolen from the Porsche design store on Madison Ave. Wednesday, cops said.
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