Update Monday 6:00 a.m.:

According to a spokesperson with the University of Tennessee Medical Center, the condition of a 16-year-old girl involved in a Blount County accident has been upgraded from critical to serious.

Update Saturday 5:15 p.m.:
The Blount County Sheriff's Office said a 73-year-old Maryville woman was killed and three others were hurt Saturday morning during a crash on Highway 321 W Lamar Alexander Parkway in Blount County.

A release from BCSO said Virginia Allison, 73, turned left onto 321 from Endsley Quarry, directly into the path of an oncoming vehicle. Both vehicles ended up in the median.

The driver of the second vehicle, Yvonne Hall, 47, of Covington, Virginia, and one of her passengers, a 16-year-old, were flown by Life Star to UT Medical Center.

Another passenger, Bailey Hall, 18, of Covington, Virginia, was taken by Rural/Metro to the hospital.

Authorities said both drivers were wearing their seat belts; however, both passengers were not.

According to UT Medical Center, Bailey Hall is listed in stable condition, the 16-year-old passenger is in critical condition, and Yvonne Hall is in serious condition.

Blount County Sheriff's Office, Rural/Metro, Friendsville Volunteer Fire Department, Blount County Fire Department responded to the crash.

Original story:
(WBIR) One person is dead, and three others were hospitalized Saturday following a two-vehicle crash in Blount County.

The accident happened on Highway 321 W Lamar Alexander Parkway, where the road intersects with Endsley Quarry Lane.

The Friendsville Volunteer Fire Department told 10News one person died on scene, and three others were taken to UT Medical Center.

FVFD said Lifestar transported two patients, and the third traveled by an ambulance.

Stay with 10News and for the latest on this developing story.