NEW YORK (CBSNewYork) — Police were searching Thursday for a suspect who allegedly sneaked up behind a woman on the Upper West Side and tried to strangle her.

Around 4:55 a.m. this past Sunday, the 23-year-old woman was walking near the Collegiate School at 260 W. 78th St. – between Broadway and West End Avenue – when the suspect came up from behind, police said.

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The suspect put his arm around the woman’s neck and his hand over her mouth, and began choking her, police said.

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The victim fought the suspect off and he fled, police said.

Police have released surveillance video of the suspect.

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Anyone with information was asked to call the NYPD Crime Stoppers at (800) 577-TIPS, log onto the Crime Stoppers website, or text tips to 274637 (CRIMES) and enter TIP577.