(CNN) -- Police in Buffalo, New York said Saturday evening that they have arrested and charged a suspect in connection with a shooting spree that left four dead outside a downtown restaurant earlier in the day. The Buffalo Police Department said 25-year old Keith Johnson is in custody and has been charged with four counts of second degree murder. Authorities would not comment on whether Johnson knew his alleged victims. Eight people hit by bullets in the early morning rampage, police say. One of the four survivors is in critical condition. At a news conference Saturday, Police Commissioner Daniel Derenda said that the dead -- two men and two women -- included a Texas man who was celebrating his wedding anniversary.
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NEW: A 25-year old suspect is under arrest in connection with the shooting spree
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NEW: Keith Johnson has been charged with four counts of second degree murder
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Eight people were shot, four fatally, at the City Grill restaurant
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Four others were injured and one is in critical condition
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