Separate attacks this week on two young women on or near Camden Street in Roxbury have residents on edge, as police ­released a composite sketch Thursday of the suspect and stepped up patrols in the area.

“It’s scary. My daughter is 13 and she goes to the school nearby, and there are times when I’m running late and just let her walk over by herself, but not anymore,” said Eva Lopez, 38, who has lived on the street for nine years.