2 arrested in Virginia in connection to Philadelphia shooting

U.S. Marshals arrested two teenagers in Richmond, Virginia, on Thursday in connection with last week's mass shooting in South Philadelphia.

Driving the news: Qaadir Dukes-Hill and Nahjee Whittington will face murder charges after they are moved to Philadelphia, District Attorney Larry Krasner said during a news conference.

State of play: Dukes-Hill, 18, and Whittington, 17, are believed to be the final two suspects who fired gunshots in Saturday's South Street shooting, authorities announced.

• Two other suspects, Quran Garner and Rashaan Vereen, were arrested earlier this week.
• The investigation remains ongoing.

Details: Dukes-Hill is accused of fatally shooting 24-year-old Alexis Quinn, while Wittington is accused of fatally shooting 22-year-old Kristopher Minners, as well as another person who authorities declined to name Thursday, said Joanne Pescatore, chief of the district attorney's homicide unit.

• She said it didn't appear that Dukes-Hill and Whittington knew the other groups involved in the shooting.
• "It appears that they had guns and they took them out and randomly fired them," Pescatore said.

What they're saying: What caused Dukes-Hill and Whittington to begin shooting remains unknown.

• "The 'why' they started shooting is going to be for them and them alone to provide an answer," deputy police commissioner Ben Naish said during a separate news conference. "I don't know what they could be thinking but they fired and they hit two innocent people."

Editor's note: This article was corrected to note that Nahjee Whittington is 17. Officials originally said he was 18.