2 arrested in Virginia in connection to Philadelphia shooting

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.