HONOLULU (KHON2) — Officers with the Honolulu police Traffic Division’s Night Enforcement Unit arrested four individuals in the Keolu area within a two-hour span for operating a vehicle under the influence of an intoxicant during the evening of Tuesday, April 20.

Police say the arrests were made due to a checkpoint in Keolu.

Police suspect that two of the individuals who were arrested in the two-hour span had used marijuana.

Officials say that a total of 15 impaired drivers were arrested across Oahu over a 12-hour period.