Security was tight early March 25 at petrochemical plants along the Gulf of Mexico following a caution issued by the FBI, The Associated Press reported.

An agency official said the Texas Coastal Regional Advisory System, a shared system that is part of the Houston Joint Terrorism Task Force, was notified of nonspecific threats gathered from overseas sources.

“It’s really uncorroborated, but there was enough there we thought it was best to send something out across TCRAS,” said Bob Dogium, the Houston-area spokesman for the FBI.

He said in the March 25 online edition of the Texas City Sun that there was no indication of an immediate or direct threat against any of the facilities that dot the Texas Gulf Coast.