WESTON, Fla. -

The mother of a Marine from Weston who is locked up in a Mexico jail left the airport without her son.

"I'm home without Andrew, so that is sad," Jill Tahmooressi told Local 10 News. "But things are moving along."

Andrew Tahmooressi, 25, is behind bars after he crossed into Mexico earlier this year with three guns in his car. He claims to have made a wrong turn near the border.

The Marine reservist appeared in a Mexico courtroom Monday hoping to be released, but instead he was put back in cuffs.

"He was frustrated. He was sad," said Tahmooressi. "He is always hopeful that standing before a judge, he will be compelled to release him."

Andrew's lawyer is preparing a motion for the case to be dropped, saying customs agents who arrested him violated procedure.

In the meantime, his mom is set to book her next flight out to be by her son's side until he is set free.

"He is holding up," said Tahmooressi. "He does have (post-traumatic stress disorder), because I can see his affect that is very guarded and flat. I know he feels like he is always under a microscope and is being examined."