It comes as police release new surveillance video of the man believed to be involved in the attack on an 85-year-old woman.
"This is like the safest neighborhood, or so we thought," said an Upper East Side resident.
Wednesday, some Upper East Side residents are re-evaluating how safe they are in their neighborhood.
On May 22nd, a man attacked a 25-year-old woman early in the morning.
The incident happened on East 90th Street between Lexington and Madison Avenues.
As the woman pulled out her keys in the doorway of her building, the man grabbed her, and attempted to sexually assault her.
But she screamed for help, and a doorman was able to chase the attacker away.
Residents who are hearing about the attack for the first time are concerned.
"I feel a little bit frightened because I'm out at 6:30 in the morning," said one resident.
That attack and the one earlier this week are only adding to the anxiety in the neighborhood.
In an incident on East 83rd Street, an 85-year-old woman was confronted and dragged to the side of a building and sexually assaulted.
Police are actively searching for that suspect as well.
They do not believe the case on May 22nd and the one this week are connected.
"The description was different than in the latest case," said Police Commissioner Ray Kelly.