George Zimmerman is back in police custody after police responded to a gun-related incident at the Lake Mary, Florida, home of the parents of his wife Shellie Zimmerman.
Mrs. Zimmerman had just filed for divorce last week.
Details of the incident are unclear, but Zimmerman was involved in a domestic dispute that involved a threat made with a firearm.
ClickOrlando reports that the home belongs to David and Machelle Dean, Mrs. Zimmerman's parents. Though, it's unknown who besides Mr. Zimmerman was involved in the altercation.
A Lake Mary police spokesman tells the station that police are still "trying to determine what exactly happened."
Shellie Zimmerman revealed last month that she had walked out on George and stayed at her parent's home the night before George fatally shot Miami Gardens teenager Trayvon Martin.
Update: ABC News reports that the incident involved Zimmerman allegedly threatening his wife and father-in-law.
The network talked to an attorney for Shellie Zimmerman:
Her attorney told ABC News that George pulled a knife on her today after she discovered a firearm in the house they shared. He then pulled a gun on her and her father after a verbal altercation went bad, according to attorney Kelly Sims.
"He's in his car and he continually has his hand on his gun and he keeps saying 'step closer' and he's just threatening all of us," Shellie Zimmerman said in a 911 call obtained by Click Orlando.
"He punched my dad in the nose," she continues. She also claims that Zimmerman smashed her iPad.
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Police are still investigating, and no charges have been filed or arrests made yet.
Follow Kyle Munzenrieder on Twitter: @Munzenrieder