SAN ANTONIO - An inmate at the Bexar County Jail is under close supervision Thursday after attempting two escapes this week.

KENS 5 got an exclusive look inside the cell where the latest incident happened.

For approximately 20 minutes Wednesday, deputies at the jail thought Thomas Trevino was inside the infirmary cell.

"About 11:12 a.m. they found out the suspect was actually missing from his cell. They began searching the area, of course in a jail like this, there are only so many places somebody can go," said Bexar County Sheriff Javier Salazar.

Deputies realized they had a problem when they came to the holding cell, looked up and noticed the ceiling tiles missing. They soon realized the inmate was now in the air conditioning ducts trying to find freedom.

Deputies finally had to crawl inside the AC ducts to get Trevino down.

"They were able to find him after several minutes. Our SERT (Special Emergency Response Team) did an outstanding job getting up there, getting that suspect back into custody," said Salazar.

Three deputies suffered minor injuries.

Salazar said the emergency response team deserves the credit for stopping the attempted escape, though he doubts Trevino would have made it far.

"It's a jail after all, and once you get into an area, there are only so many places you can go. Outside is not one of them," said Salazar.

KENS 5 has learned inmate Thomas Trevino tried to escape a time before, running from deputies inside the jail shortly after being booked on Monday.

He didn't get far.

In addition to his previous assault charge, he's now facing charges of attempted escape and assault on a public servant.

Salazar said the Bexar County Sheriff's Office has about 90 positions open, but he doesn't believe manpower had anything to do with Trevino's escape.