More than a dozen people, including teenagers, have been arrested after a year-long investigation in Butler County.

It began last April, when someone called 911 after a teenager was causing a disturbance in the 1000 block of North Cedar Point in Rose Hill. Police said the teen was under the influence of 25i, which is similar to LSD.

The incident sparked an investigation related to the sale and distribution. Police said they were able to find the teen's drug dealer, and after searching his phone, they were also able to track the drugs.    

Officers also found marijuana from a Colorado dispensary at the scene.

Chief Robert Sage, Rose Hill, said it was the most drug-related investigation since he's been chief.

"A lot of work went into it and the officers were very, very proud and very, very happy when the charges were filed," Sage said.

Ten adults and five juveniles are facing drug-related charges.