BATON ROUGE, La. (AP) — Court documents show federal agents were worried last October that a Louisiana private investigator had illegally obtained Donald Trump's tax returns and may leak them.

The agents say in court documents obtained by The Associated Press on Wednesday that the public release of the returns could have influenced the presidential election.

Authorities now say it turns out that Jordan Hamlett wasn't able to get the tax returns. He has been charged with misrepresenting his Social Security number, a felony punishable by up to five years in prison.

Hamlett has pleaded not guilty.

Authorities have not said what Hamlett's motive for getting the federal tax returns were, and they wondered in the documents whether he was working with anyone or planned to sell them or release them.