WHITE HALL — Weapons destruction at the Pine Bluff Arsenal was put on hold for two days last week after a fire broke out in the explosive containment room, arsenal officials said Tuesday.

The U.S. Army’s Chemical Materials Agency said a small fire broke out for about two minutes on May 11. Processing was stopped and, after an investigation, corrective measures were taken. Rocket processing resumed Friday.

The agency said in its weekly update that personnel were safe and that the plant’s systems reacted as designed. The cause of the fire was still under investigation.

The Army in March began destroying chemical weapons that had been stored at the arsenal beginning in 1945.

Prior to the start of construction, the arsenal had 3,850 tons of chemical agents at the site, or 12 percent of the Army’s original chemical weapons stockpile.

The incineration was undertaken to comply with an international treaty. The arsenal is the fifth in the country to begin incineration of the military’s chemical weapons.