GOWANUS, Brooklyn (PIX11) — A woman was sexually assaulted in her Brooklyn apartment building on Wednesday, police said.

The 29-year-old victim was followed into her apartment building near 3rd Avenue and 8th Street around 11 p.m., according to the NYPD. In the building’s lobby, the assailant sexually assaulted the victim from behind and then ran away, police said.

First responders transported the victim to a hospital where she was treated and released.

Investigators described the suspect as a man in his 30s, last seen wearing a blue hooded jacket, a dark-colored backpack, black jeans, and white sneakers.

The NYPD Special Victims Unit is investigating the incident.

Anyone with information in regard to this incident is asked to call the NYPD’s Crime Stoppers Hotline at 1-800-577-TIPS (8477) or for Spanish, 1-888-57-PISTA (74782). The public can also submit their tips by logging onto the Crime Stoppers website at https://crimestoppers.nypdonline.org/, or on Twitter @NYPDTips.