The correct one is -

• Innocent of
English Meaning: (of a person) not guilty of a particular crime.
Bangla Meaning: নির্দোষ।

• Innocent এর পর appropriately 'of' preposition ব্যবহৃত হয়। 
Example: He says that he is innocent of the crime. 

Correct sentence: She was found innocent of any crime.

Source: Advanced Learner's Communicative English by Chowdhury & Hossain& Cambridge Dictionary.