Updated:The incident happened in Lake Mary, Florida, at the home of Zimmerman's in-laws. Zimmerman's estranged wife, Shellie, recently filed for divorce saying being acquitted in the killing of Trayvon Martin had brought out a whole other side of her husband. She called his behavior reckless and said he now acts selfish and invincible. Shellie called police Monday, saying Zimmerman first pulled a knife on her at their home, then later followed her to her parent's house. Here's the 911 call.