PHILADELPHIA (CBS) – A suspect has been arrested in connection with the violent slashing and robbery of a female on a Philadelphia street.

Cory Harley, 30, surrendered to authorities for his alleged role in the attack that happened in the early morning hours of November 11th, 2012. Police sources say Harley made a full confession.

Twenty-three-year-old Ashley Hackett was walking down the street alone when the suspect approached her from behind and ambushed her in the 700 block of S. 9th Street in the Italian Market area. (See Related Story)

The suspect used a knife to violently attack Hackett and the knife stopped barely an inch from her throat.

As she screamed for help after being slammed against a wall, the robber took off with her purse, which was later recovered in the 800 block of Kenilworth St.

Investigators say a tip from a homeowner near the crime scene led to Harley’s arrest. A $15,000 reward was being offered in connection with the arrest and conviction of the suspect.