SAN ANTONIO -

The Department of Homeland Security and San Antonio police on Thursday afternoon busted what they're calling a possible human smuggling operation.

Three adults and three Honduran children were inside a home on the east side when one of the adults made an outcry and told police he was being held against his will.

Alien harboring charges have been filed against 37-year-old Sonia Lopez and 27-year-old Pablo Sixto-Mased.

Homeland Security officials are calling Thursday's incident at the home near Rice and Schumacher roads isolated and said they have yet to determine whether it's a human trafficking operation or a human smuggling operation but that it was more likely a human smuggling operation.

"Individuals ... were brought here against their will (and were) further exploited and, by the sound of the individual that escaped, he made it sound like he was being held against his will or exploited," said Homeland Security Investigations Special Agent in Charge Fred Hollenbeck.

After SWAT teams used tear gas to gain entry to the home, the three adults and three children were brought out.

One of those adults -- a woman -- is being looked at as a person of interest in connection with the case, investigators said.

Everyone inside the home received medical attention.

Earlier in the day, the Carroll Early Child Development Center, in the nearby 400 block of Holmgreen Road, was put on lockdown as a precaution.

Police said the students were not in danger. Carroll Early Child Development Center is part of the San Antonio Independent School District.