One of the drivers involved in a head-on crash about 8 a.m. Wednesday in the 1900 block of West Main Street remains hospitalized, authorities said Thursday.

Kelvin Fillers, 38, of Old Kentucky Road, was taken by Greene County-Greeneville Emergency Medical Service to Johnson City Medical Center, where he was listed in critical condition, a hospital spokesman said.

Fillers suffered a head injury, EMS Director Robert Sayne said.

Christopher Fillers, 29, of the Newport Highway, was taken by EMS to Takoma Regional Hospital. He was treated and later released, a hospital spokesman said.

Christopher Fillers, who is no relation to Kelvin Fillers, suffered a hip fracture, Sayne said.

Christopher Fillers was northbound on West Main Street, also known as Highway 321, in a 1996 Buick Park Avenue. Kelvin Fillers was southbound in a 2007 Toyota Scion.

Christopher Fillers' car crossed the center line and struck Kelvin Fillers' car head-on, Tennessee Highway Patrol Trooper Paul Kilday said in a report.

"The investigation is ongoing. Possible charges are pending," the report said.

The wreck happened near Pelican Lane. Traffic on Highway 321 was diverted on Pelican Lane around to Fann Drive for several hours while the crash scene was cleared.

Kelvin Fillers was not wearing a seat belt, the report said. Christopher Fillers was wearing a safety restraint.

Christopher Fillers was able to exit the smoking car on his own, witnesses said. The front driver's-side wheel of the Scion was sheared off by the impact of the crash.