DC man charged with killing 5-week-old boy

WASHINGTON -- A man has been arrested after a 5-week-old infant was found dead in a Northwest D.C. home, police said.

Police charged 28-year-old Robert Smith Sr. with first degree felony murder in connection with the death of the baby boy, Robert Smith Jr.

The infant was found unconscious and unresponsive the afternoon of August 4 at a home in the 3700 block of 9th Street.

He died of multiple blunt force injuries, according to police.