HOUSTON - A power outage darkened more than 70,000 homes and forced some state prisons into lockdown mode as a precaution in Southeast Texas on Wednesday night.
The outage affecting Entergy customers in at least seven counties, including Grimes County, was blamed on a transmission failure.
"At this point, we don't know if it's storm-related," Entergy Texas spokesman David Caplan said. "There are a lot of people inspecting the lines to determine what exactly is going on. We're working feverishly to open up additional lines."
Caplan said late Wednesday he did not know when power would be restored.
Some Southeast Texas prisons, including prisons in Huntsville, were forced into lockdown mode, Texas Department of Criminal Justice spokeswoman Michelle Lyons said.
"Whenever we have power outages, we immediately have lockdown to restrict prisoner movement throughout the units," Lyons said in the online editions of the Houston Chronicle.
The outage also affected Montgomery, Trinity, Liberty, Waller, Polk and San Jacinto counties.
Louisiana-based Entergy has 373,000 customers from the Texas-Louisiana border to north of Houston.