A man who has been arrested for allegedly killing a woman inside a SoHo hotel room in Lower Manhattan may be a serial attacker who assaulted women in different states, police said. After the murder, a surveillance photo showed Raad Almansoori wearing leggings that belonged to Denisse Oleas-Arancibia Police believe Almansoori left the hotel wearingOleas-Arancibia’s leggings because his clothes were …