The sobbing wife of George Zimmerman called 911 [on September 9] to report that her estranged husband was threatening her with a gun and had punched her father in the nose, but hours later she decided not to press charges against the man acquitted of all charges for fatally shooting Trayvon Martin. Police officers in Lake Mary, Fla., were still investigating the encounter as a domestic dispute. Shellie Zimmerman left the house after being questioned by police. George Zimmerman remained there into the early evening and his attorney denied any wrongdoing by his client. George Zimmerman was not arrested. Shellie Zimmerman, 26, who has filed for divorce, initially told a 911 dispatcher that her husband had his hand on his gun as he sat in his car outside the home she was at with her father. She said she was scared because she wasn't sure what the 29-year-old Zimmerman was capable of doing. Hours later she changed her story and said she never saw a firearm, said Lake Mary Police Chief Steve Bracknell. For the time being, domestic violence can't be invoked because she has changed her story and says she didn't see a firearm," Bracknell said. "We didn't find a gun," Lake Mary police spokesman Zach Hudson said. "We didn't find anything that indicated he had a gun on his person." Hudson said Zimmerman was released from investigative detention at around 6:30 p.m. and "he just walked back into the house." "Right now he's not a suspect in anything per se, but were still viewing the video and trying to ascertain what new information that may yield," he said, referring to video from home surveillance cameras outside the house.