ATLANTA — Jonathan Mattise, an award-winning reporter who helped lead The Associated Press’ coverage of a massive chemical spill in West Virginia, is joining the AP’s Nashville bureau.

The appointment was announced Wednesday by Ravi Nessman, AP’s interim editor for the South Region, and Scott Stroud, news editor for Appalachia.

“Mattise is a resourceful reporter who has a deep knowledge of the region. His natural storytelling ability and his doggedness, which held state government accountable in West Virginia, will prove assets for our coverage in Tennessee,” Nessman said.

Mattise has been with the AP in Charleston, W.Va., since January 2014, when a chemical spill polluted the water supply in nine counties. He was recognized by AP for an investigative story revealing that a new company run by some of the same people charged in the spill had been caught committing new environmental violations.

A 2008 graduate of Villanova University and a native of Scranton, Pennsylvania, Mattise came to AP from Treasure Coast Newspapers in Florida, where he won a statewide Sunshine Award and wrote about damaging freshwater releases into the St. Lucie Estuary, drawing connections to the sugar industry.

Mattise will begin working in Nashville Oct. 24.