The Army has launched two investigations after a deadly truck accident killed nine soldiers and injured three others on Fort Hood, Texas.

Experts from the Army Combat Readiness Center are leading the first investigation. The team visited the accident site on Saturday, said Maj. John Miller, a spokesman for the 1st Cavalry Division.

The second investigation is an AR 15-6, or a commander’s fact-finding investigation, Miller said. The investigating officer appointed to conduct the 15-6 is in the “preliminary stages” of gathering information, he said.

As the investigations unfold, soldiers on Fort Hood will remember the fallen during a pair of memorial services.