WASHINGTON — The investigation of Gilbert Arenas and the guns he brought to the Verizon Center took a much more serious turn Friday amid a report that the Washington Wizards point guard and teammate Javaris Crittenton allegedly drew on each other during a locker-room argument over a gambling debt.

Arenas responded with a flurry of messages on Twitter, at times making light of the news but also making one tweet that read somewhat like a denial: "I understand this is serious..but if u ever met me you know i dont do serious things im a goof ball this story today dont sound goofy to me."