A woman was leaving her job at an East Harlem asthma center yesterday when a man burst through the building's entrance and repeatedly stabbed her with a sharp object. Police say the man was a stranger to the woman, who was standing inside the first set of doors to the luxury building on East 110th Street between Lexington and Third Avenue around 5:20 p.m. when she was suddenly attacked. The NYPD has released video of the incident:

The 58-year-old woman, who reportedly works for the city Health Department, sustained multiple stab wounds to her right thigh and small lacerations; she was taken to Mt. Sinai Hospital in stable condition. Her attacker fled east on 110th Street and remains at large.

Police sources tell the Daily News that the man asked his victim, "How you doing, miss?" before stabbing her with a screwdriver.

The asthma center, which is run by the NYC Health Department, is on the ground floor of the building, called The Mirada. Tiffany Loria, a resident of the building, says the first doors to the building are always unlocked, while a second set of doors are locked. According to Loria, the Mirada's lobby attendant witnessed the attack and immediately ran to try and intervene, causing the man to flee.

Police released a photo of the suspect, described as 30 to 40 years old, 6'0", 220 lbs., with a beard:

Anyone with information in regards 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 or by texting their tips to 274637 (CRIMES) then enter TIP577. All calls are strictly confidential.