Lawrence police early Sunday confiscated three guns, including an assault rifle, found in a pickup truck parked in the 700 block of New Hampshire Street.
Three Kansas City-area men were given notices to appear in Municipal Court for having firearms near a drinking establishment.
Shortly before 3 a.m., officers saw a case they thought might contain a firearm in the back of the truck.
They watched as the truck was approached by six men after patrons began leaving Last Call, a nearby dance bar at 729 N.H.
Officers talked to the men and then found an AK-47 assault rifle inside the case. They also found two pistols, a Ruger .45 and a .380-caliber. Two Kansas City, Mo., men, ages 20 and 22, and a 22-year-old Kansas City, Kan., man were issued notices to appear in court.
Police have confiscated several weapons found in vehicles in the same area over the past few months.
Shots were fired inside Last Call a few weeks ago, though nobody was injured.