Yes. N.J.S.A. 2C:25-21(a)(1) requires a law enforcement officer to arrest the alleged perpetrator if “the victim exhibits signs of injury caused by an act of domestic violence.” Injury can include not just physical markings, but also pain or any impairment of physical condition. N.J.S.A. 2C:25-21(c)(1) demands that police officers “liberally construe” what amounts to a sign of injury caused by domestic violence.