Lawrence police responded to a fight just after 2 a.m. Monday outside Royal Crest Lanes, 933 Iowa. According to Lawrence Police Sgt. Susan Hadl, a number of people were involved but no injuries were reported. An officer followed a car reportedly involved in the incident north on Iowa Street and saw the occupants throw an item out the window, police said. The item recovered was a black handgun, and an illegal knife was found in the car. Police arrested a 29-year-old Lawrence man on aggravated weapons violations and for driving under the influence. Hadl said it was unclear to what extent the vehicle’s occupants were involved in the fight. No one at the scene of the fight reported seeing weapons.