Jon Cryer's ex-wife Sarah Trigger was questioned by photogs -- and the FBI -- about the alleged murder for hire plot against her ex-husband ... but if she had anything to do with it, she certainly wasn't talking.
Trigger told us last week she knew nothing about the alleged plot. The FBI is investigating.
Jon Cryer's Ex-Wife -- Mum on Murder Plot
1/22/2010 7:00 PM PST BY TMZ STAFF
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