COLUMBIA, Tenn. (AP) - Authorities in Tennessee say a spat over chewing gum ended with a 14-year-old boy stabbing his twin brother to death.

The sheriff's office in Maury County says the twins were arguing when one grabbed a kitchen knife and stabbed his brother in the chest.

The sheriff says the surviving teen, who has not been identified is very remorseful.  He is being charged with first-degree murder.

The principal at the boys' middle school says it will be "a hard life lesson" and "a long healing process" for their classmates.

(Copyright 2006 by The Associated Press. All Rights Reserved.)