The 21-year-old man suspected of killing 10 people at a Colorado supermarket appeared in court for the first time today.
His attorney requested a health assessment "to address his mental illness."
The suspect only spoke once when the judge told him of the 10 first-degree murder charges he faces.
Monday's attack was the second deadly mass shooting in the U.S. in a week.
Authorities are still investigating and have not publicly identified a motive.
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