There were no early warning signs that could have tipped off Fort Hood that Army Spc. Ivan Lopez-Lopez was a security risk and would open fire on the base in April, killing three soldiers and wounding 12, according to Army investigators.

In the weeks leading up to the shooting, Lopez-Lopez experienced stressors that could have been red flags, including the death of a family member and financial difficulties. However, the base’s risk assessment of soldiers relies on them self-reporting any stressors they may be facing, according to the report released Friday on the investigation.

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