BROWNSVILLE, Texas – Held captive in one of Mexico’s most infamous prisons, Marine Veteran Jon Hammar is seen chained to a bed in a new photo sent to the family from an anonymous Mexican email account.

“His eyes look a little lost,” an emotional Olivia Hammar, his mother, told Fox News Latino. “It doesn’t look like him. I feel like my blood pressure is through the roof.”

The photo shows Hammar in solitary confinement inside the Matamoros state prison, nicknamed CEDES. A scraggly looking Hammar is seen shirtless and barefoot with a beard, jean shorts and with his feet over what appears to be grey crocs. He is sitting on an old twin-sized mattress in a room with chipped walls. A gallon of water and a refrigerator are seen to his right. Hammar is staring at the person taking the photo and does not appear to have any visible injuries.

BROWNSVILLE — A group representing more than 14,000 businessmen in northern Mexico is pleading for the release of Marine Corps veteran Jon Hammar, warning his “unfair” imprisonment for carrying an antique shotgun on his way to a surfing vacation will further devastate an already struggling tourism market.

Hammar has been locked up since August with limited communication to his family in Florida and with little hope of being released before Christmas.

News of his incarceration is playing as widely in Mexico as it is in the United States, said Gerardo Acevedo Danache, a Matamoros, Mexico, lawyer who’s vice president for the Matamoros and the state of Tamaulipas chambers of commerce.

“I believe we are the first voice inside Mexico to demand justice,” Acevedo said. “It’s bad that you promote your country, you try to get tourists, and when you get the tourists, you put them in jail,” he said.