The shooting – which left three of the victims in critical condition – happened about a mile from Ball Arena, where the Denver Nuggets defeated the Miami Heat on Monday night to claim their first NBA title.
The shooting happened about 12.30am, Denver police said in a statement.
Charles Robert Smith, 43, faces three counts of second-degree murder after being arrested in connection with the Annapolis shooting.
“He helped us out so much,” said another son of Nicholas Mireles, Eric Velasquez.