PORT NECHES, Texas (AP) — Three workers were injured early Wednesday in a massive explosion at a Texas chemical plant that also blew out the windows and doors of nearby homes.

The fire continued to burn Wednesday morning at the TPC Group plant, after the blast sent a large plume of smoke that stretched for miles. All employees have been accounted for, TPC said in confirming the three injuries involving two employees and a contractor.

The plant in Port Neches in southeast Texas, about 80 miles east of Houston, makes chemical and petroleum-based products. TPC said later Wednesday morning that it had no details on the cause of the explosion or the extent of damage to the plant.

Jefferson County Judge Jeff Branick told Beaumont TV station KBMT the blast awakened him early Wednesday at his home, and that it initially sounded like someone firing a gun into his house.