Surveillance footage showed the suspect shortly after the robbery and attempted rape of the NYU student on Oct. 8 in SoHo. An ex-con who just got out of prison in July was arrested Wednesday for the attempted rape and robbery of a 20-year-old NYU student in SoHo, authorities told the Daily News.

Glenn Williams was nabbed after authorities used facial recognition technology, according to a report. He was taken into custody at 11th Ave. and W. 15th St. and later charged with attempted rape, robbery, sex abuse, and assault.

Williams was jailed in 2011 for criminal possession of a weapon, and received a two-to-four year sentence, officials said. He was conditionally released from Riverview Correctional Facility on July 8. Exactly three months later, the 28-year-old grabbed the woman and put her in a choke-hold as she was walking along Thompson St. between Spring and Prince Sts. at about 1:15 a.m. on Oct. 8, cops said.

Surveillance video obtained by cops shows the man believed to be the suspect walking into a building with a bag that looked like the woman’s. Investigators used facial recognition technology to identify the suspect, WNBC/Ch. 4 reported.