Police are looking into two separate cases of assault on the City's south side last night. In one situation, an 18 year old man is charged with aggravated assault after a 24 year old man was sent to the hospital with injuries to his face. Earlier in the evening, a 49 year old man defended himself from a woman with a knife and was sent to the hospital with cuts to his hand. The man and woman knew each other and she is charged with assault with a weapon.