Published: Aug 13, 2010 4:07 PM EDT
Updated: Aug 13, 2010 1:07 PM EDT

WINTER HAVEN, Fla. (AP) - Polk County Sheriff's Office detectives say they've solved the case of a 36-year-old central Florida woman who disappeared nine years ago.

Dion Kaseta, now living in Chattanooga, Tenn., has been arrested in connection with the death of Kimberly Mimmovich in 2001, his former live-in girlfriend.

Investigators say Mimmovich was last seen with Kaseta at the Midway Lounge near Lake Alfred.

Kaseta originally told detectives he and Mimmovich had driven to Deerfield Beach, where they got into an argument. He said Mimmovich left to walk on the beach alone.

Kaseta said he reported her missing after she never returned.

Authorities say additional witnesses and evidence have lead them to conclude that Mimmovich is dead and that she was killed by Kaseta.