Authorities in Montgomery County say three people were arrested Saturday. 16-year old Brittney Maynes was charged with Serious Assault. The teen was later released to the custody of her parents. And, two Red Oak residents were arrested on trespassing charges, for allegedly trespassing on railroad property. 51-year old William Coatney and 23-year old Jennifer Dellaca were taken into custody at around 5-p.m. Saturday. The pair were issued citations, and released.