Authorities are investigating after a south Tennessee police officer fatally shot a suspect.

The Chattanooga Times Free Press reports (http://bit.ly/2bF7Zy6) the altercation began at about 6 p.m. Friday when East Ridge police responded to a report of a man wielding a knife.

Police located the suspect outside a home, Hamilton County Sheriff's spokesman Matt Lea said. The man refused commands and approached the officer with a weapon, prompting the officer to fire, Lea said.

Read More: http://abcnews.go.com

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