Sioux Falls Police say a man tried to rape his ex-girlfriend this weekend while her kids were in same apartment. It happened Sunday morning in the 300 block of South Duluth Avenue.

Police the victim and the suspect live in different units in the same building. They say 31 year-old David Allen Daugherty was watching for the victim to come outside with her daughter to walk their dog. Neighbor Crystal LaPointe tells us she saw what happened next. "And she was handing something in and I seen someone grab her arm and then a little bit later, probably not even a minute later she comes running out and runs back into the other apartment, and the guy's right behind her and shuts the door."

At the time, Crystal didn't think much of the whole incident. But a few moments later police and medical aid workers started showing up. Police say Daugherty forced his way into the victim's apartment. When he did that, police tell us she told the three kids in the apartment to go to one bedroom while she and the suspect went to another bedroom.

He allegedly tried to rape her, but she got away and was able to get outside. At that point neighbors heard what was going on and called police. Police say neither the victim or the children were injured. Investigators say Daugherty walked away, but they found him and arrested him for attempted rape a short time later.