The cause of the blaze that began May 13 was under investigation but had burned grass, shrubs and timber at a rapid pace.

A wildfire in eastern Arizona continues to burn, expanding to over 20,000 acres, with more red flag warnings in effect on Monday.

Kierra Frazier is a news editor for CBS News & Stations. A wildfire that broke out in a rural area of eastern Arizona has burned over 6,400 acres as of Wednesday and continues to move north, according to officials.