Mississippi Teen’s Burning Death Remains a Mystery More Than a Month Later The FBI just added $25,000 to the fund to find information on Jessica Chambers.

 -- The reward for information in connection to the attack on a young woman in Mississippi who was allegedly set on fire and died shortly after has been increased to $43,000.

Reward money has come in from multiple sources since the Dec. 6 attack on 19-year-old Jessica Chambers, with the latest contribution of $25,000 from the FBI, officials said.

The U.S. Marshals Service contributed $10,000 early on in the search and Crimestoppers added $1,000, Panola County District Attorney John Champion told ABC News. The remaining $7,000 is made up by personal contributions.

The investigation is active but no arrests have been made, he said.

When asked whether there were any official suspects, Champion said "not really at this point. We have several people that we're looking at but no solid suspects."

Officials are looking into "a multitude of evidence," he said, declining to elaborate because of the open investigation.

Chambers was found barely alive with 98 percent of her body covered in burns Saturday Dec. 6 around 9 p.m., with the early parts of the investigation focused on piecing together her final hours. She was found at the side of the road near the rural town of Courtland, Mississippi, before being airlifted to a nearby hospital. She died shortly after.