A fire that burned over four days at a petrochemical plant in suburban Houston was finally extinguished Wednesday. "As of 3 a.m. today the firefighting crews on the scene of the ITC Tank Farm Fire are reporting that all tank fires have been extinguished," Intercontinental Terminals Company said in a news release. "Crews continue to spray foam and water on the tanks to facilitate cooling and prevent reigniting of the remaining material." The fire began in a single tank at ITC, a storage facility in Deer Park, Texas, on Sunday afternoon and quickly spread to a second tank, the company said. A specialty firefighting team from Louisiana was brought in to battle the fire, and used foam and water, ITC officials said. By late Tuesday, four tanks remained burning at the facility according to Harris County authorities.