Police have released a sketch of the man they've been hunting in connection with two rapes on the Lower East Side more than a year apart.

According to investigators, the man followed a 17-year-old girl into her building elevator, where he promptly pulled a knife. That was Thursday night around 10:30 p.m. Then, police say the suspect forced her from the elevator into a stairwell, where she was able to fight him off; he fled the scene.

And detectives say back on Jan. 16, 2010, the suspect -- believed to be the same man -- followed a 19-year-old woman into her building elevator, where he used the same modus operandi (MO). However, she wasn't able to fight him off, so cops say he was able to rape her.

The accused rapist has been described as a Hispanic male, between 17-25 years-old; and between 5'8" to 5'10."

Police say in the 2010 attack, he was wearing a black Northface jacket, blue jeans and black boots. In the most recent attack, they say he was clad in a grey, hooded sweatshirt and blue jeans.

If you can help police with their investigation and you have any information, please call CrimeStoppers at 1-800-577-TIPS; all call will be kept confidential.