Steve Stephens, 37, stands charged with Sunday's aggravated murder of 74-year-old Robert Godwin, and police Chief Calvin Williams said law enforcement nationwide are on high alert.
"This is what we would consider a national search for Steve," Williams told reporters. "So, we are not going to leave any stone unturned."
The suspect's mother said that when she last saw Stephens on Saturday, he said it would be a miracle if she ever saw him again. They spoke the next day, she said, and he told her he was shooting people because he was angry with his girlfriend.
