Chemical release in Texas city

I just got an alert about a chemical release in Texas city with no other detail. Anyone have an idea of what is happening?

Edit: saw someone post this in the Galveston one. Sharing here.

from Texas City Facebook , "

Shelter in place – Texas City At this moment we are experiencing a chemical release from the industry sector. Texas City is calling for a shelter in place specifically 14th and 34th st area. Please go indoors. Turn off air-conditioning units and close all windows, and continue to monitor social media.

Edit 2: the restriction was just lifted.