(CNN) — A 40-year-old man is facing murder charges after allegedly pulling up on a boat to a waterfront bar in North Carolina Saturday night and opening fire, killing three and injuring at least eight others.

Nigel Edge was arrested Sunday and charged with three counts of first-degree murder, five counts of attempted first-degree murder, and five counts of assault with a deadly weapon with intent to kill, Southport Police Chief Todd Coring said at a Sunday morning news conference. Police think Edge acted alone and said the attack was “highly premeditated.”

The extent of all the injuries is unknown, but at least one of the victims “is now clinging for their life,” Jon David, district attorney for North Carolina’s Judicial District 5, said Sunday.

Additional charges are still possible, C

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