New evidence suggests that a former president of the United States may have been involved in a death investigation during the Clinton administration

A former president is under investigation for possible involvement in a mysterious death investigation involving an Arkansas medical examiner’s office, a new report says.

In the report, The Investigative Project on Terrorism (IPT) and the New York Times said they obtained a court order that allows them to interview former Arkansas Gov.

Mike Huckabee about the death of Dr. Bruce Woodhouse, who died in 1996 while being treated for a chronic obstructive pulmonary disease.

Woodhouse, a Republican health care executive, died after being taken off of a ventilator at the state’s Medical University of Arkansas.

He had been hospitalized since August 1997 for a lung infection.

Huckabee, a potential 2016 presidential candidate, said on Wednesday that Woodhouse had been put on a ventilation machine to help prevent the disease from spreading.

But he has denied any knowledge of the medical examiner, the New Orleans Times-Picayune reported.

The FBI is investigating the case, according to the Times-picayune.

In addition to Huckabee, the two other former presidents under investigation by the FBI are former Gov.

Bill Clinton of Arkansas and former Govs.

Bob McDonnell of Virginia and Bob McDonnell II of Virginia.

McDonnell’s office declined to comment to the AP on Wednesday.

HuffPost reached out to the Office of the Medical Examiner for comment but has not received a response.

The New Orleans district attorney’s office did not respond to a request for comment.ABC News’ Mike Levine contributed to this report.