A federal law enforcement search of homes in upscale Houston neighborhoods Friday was prompted by the ordering of chemicals that could be used in the manufacture of some type of gas, according to an official.

Agents wearing Hazmat-type gear raided two homes in Houston and a third home in Bryan at about 9 a.m.

The law enforcement source, who asked not to be identified, said the chemicals were not the type used in the manufacture of a traditional explosive.

The intent was “to make some sort of gas … like tear gas or nerve gas,” the source said.

The official said it was not known if any gas was ever produced or recovered.

All three homes are linked to a member of the Houston art community, Cecily E. Horton, and her husband, Andrew Schneck.

Horton’s business partner confirmed that the raids were conducted on homes owned by Horton, but indicated the target of the activity is their son.

More: Feds Raid Houston Homes Over Purchase of Chemical Used in Gas Creation - Houston Chronicle