OKMULGEE COUNTY, Oklahoma - New information on the investigation into the Twin Hills school buses that were stolen and burned in Okmulgee County in August.

The Okmulgee County Sheriff's Office says they now have four in custody.  The latest arrest is a juvenile and they are not looking for anyone else.

News On 6 also found out that one of the suspects arrested this week, Devin Riggins from Bixby pled guilty to drug possession just four days before investigators say he helped steal and burn the Twin Hills school buses.

The Tulsa County DA's office say Riggins was given a deferred sentence on August 19th for smoking marijuana in a park with children nearby and promised to stay out of trouble for 18 months.