A KHOU 11 News viewer named Mike reached out with this question: "Has the Ft. Hood shooter been put to death, and if so why not?"

Here's what we verified.

Major Nidal Hasan killed 13 people and injured 32 on a shooting rampage at Fort Hood back in 2009. It is considered the worst mass murder at a military base in U.S history. We checked military records and found Hasan was sentenced to death in 2013, and now remains locked up on military death row at Fort Leavenworth in Kansas. 

In  military death penalty cases, there are several mandatory appeal stages that could take up to 10 to 15 years. Ultimately a military death sentence will require final approval by the president.

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