The Lawrence Police Department conducted a DUI checkpoint on Halloween night, resulting in 12 arrests and 36 traffic citations, Lawrence police spokesman Sgt. Trent McKinley said.

Between midnight and 3 a.m. Sunday — which was a four-hour span because of the end of daylight saving time — officers tested 23 total drivers who had consumed alcohol at a checkpoint in the 1100 block of Tennessee Street. During the operation, officers also conducted three drug investigations and cited three people for driving with open containers of alcohol, McKinley said.

Lawrence police made additional DUI arrests that evening at locations outside of the check lane, McKinley said. In total, 34 people were arrested on suspicion of DUI in Lawrence between Friday night and Monday morning, according to the Douglas County Jail booking logs.