A man walks by burnt vehicles and gas storage tanks at a gas compression station of Pemex in Reynosa, northern Mexico, Sept. 18, 2012. At least 26 people were killed and as many injured when the facility burst into flames on Tuesday.STRINGER/Reuters
Soldiers guard the Pemex facility Sept. 18, 2012. The fire was one of the worst accidents to hit the state oil monopoly in recent years.STRINGER/Reuters
Relatives of Pemex workers gather at the facility Sept. 18, 2012. The cause of the fire is unclear and Pemex said it is still investigating the incident.STRINGER/Reuters
Soldiers stand on guard at the Pemex facility. The company said gas imports from the United States were not affected. The station, which stores gas from Mexico’s Burgos field, is not an import terminal.STRINGER/Reuters
Relatives of Pemex workers cry at the site Sept. 18, 2012. Seven workers were still missing on Wednesday, while 28 people were hospitalized, two in serious condition, Pemex said.STRINGER/Reuters
Burnt cars and gas storage tanks are seen at the facility. The fire was the third blaze in about five weeks at state-run oil monopoly Pemex installations in Tamaulipas.STRINGER/MEXICO/Reuters
Soldiers walk outside the Reynosa plant. Tamaulipas has been a major battleground for drug cartels, and gangs have often tried to siphon off fuel from pipelines.STRINGER/MEXICO/Reuters
Soldiers stand guard at the Reynosa plant. Earlier this month, four Pemex workers were injured in a fire at the Madero refinery in Tamaulipas, following another blaze at the same refinery on Aug. 13.STRINGER/Reuters