Nakoula Basseley Nakoula, 55, was interviewed at the Los Cerritos station near his home, the local Sheriff's Deputy told the NBC news.
"He went to the Cerritos station to talk with probation officers. He's not under any arrest," Deputy Sherif Don Walker said.
Nakoula, a self-described Coptic Christian, has been identified by US Federal authorities as the key figure behind "Innocence of Muslims," a film denigrating Islam that ignited mob violence against US embassies across the Middle East.
The questioning of Nakoula by police comes as Federal officials have said they were investigating the activities of Nakoula, who has been convicted of financial crimes.
The probation department is reviewing the case of Nakoula, who was previously convicted on bank fraud charges and was banned from using computers or the Internet as part of his sentence. The review is aimed at learning whether Nakoula violated the terms of his five-year probation.
Karen Redmond, a spokeswoman for the administrative office of the US courts, has confirmed he review is under way. If the probation department determines Nakoula violated terms of his release, a judge could send him back to prison.
