Rahmanulla Lakanwal, 29, pleaded not guilty to charges accusing him of first-degree murder, assault and related firearms offenses on Tuesday.

Mental health of Rahmanullah Lakanwal, who is charged with murder, had reportedly been unravelling for years

According to a criminal complaint, Rahmanullah Lakanwal shouted "Allahu Akbar" as he fired and was reloading when a Guard member shot him.

Judge orders Rahmanullah Lakanwal held without bond after fatal shooting in Washington, DC caused 'sheer terror'.

Rahmanullah Lakanwal faces charges after one member was killed and one wounded in shooting near White House

Rahmanulla Lakanwal, 29, pleaded not guilty to charges accusing him of first-degree murder, assault and related firearms offenses on Tuesday.