WATERBURY, Conn. (CBS Connecticut) ? A naked man is accused of raping a pit bull in his neighbor?s yard. Alice Woodruff told WTNH-TV that she confronted her neighbor at gunpoint while he was performing sex acts on her rescue pit bull that is kept on an 800-pound tow chain in her backyard. ?I thought my dog had killed somebody because I saw a man underneath her,? Woodruff explained to WTNH. ?I started to scream. I had a citronella candle and I threw it at him, screaming ?get off my dog, you have to get out of here.? He said, ?No, today is the day we are going to spend the rest of our lives together.?? Woodruff said the man appeared mentally ill as he was telling her that the terror group ISIS sent him. ?He pranced through the yard naked, yelling ?this is our day and you have to prosper in it,?? Woodruff told WTNH. ??ISIS sent me,? and I was thinking, ?Did something like this just land in my backyard?? I ran in, got my gun out of the bedroom and realized as usual the ammunition is in my car locked in my glove box. I showed him the clip went in, but I always kept the gun at my side while I was talking to him. He kept saying this is the plan, that we were going to die today in a massacre. He didn?t seem to care that I had the gun, and I kept it down. Then I gave him a warning and shot the gun to the right into the dirt.? She was concerned that her neighbor was going to set off a bomb. ?He put his arms out and started walking toward me, telling me to kill him, but to know that as soon as I kill him that we were going to die,? Woodruff told WTNH. ?Honestly, the whole time I thought there was a bomb or gun and he was going to take it out and do a massacre.? The Waterbury Police Department is investigating the incident. Authorities plan to charge him with cruelty to an animal, sexual assault and breach of peace. The man is currently hospitalized.