A 13-year-old boy chased and threatened his brother with a knife during an argument, landing him in the Regional Juvenile Detention Center on Monday, Johnson City police said in a news release.
The boy was arrested about 9:45 p.m. Monday and charged with aggravated domestic assault.
Police said the arrest resulted from an incident at 114 Lynn Road, Lot 1. The investigation indicated the boy had been in an argument with his brother and showed a knife before chasing his brother while threatening to use it.
He was set to appear in Johnson City Juvenile Court at the next available date.