A 21-year-old man was killed Monday night when his vehicle collided with a tree on Tribble Gap Road, authorities said.

According to a Forsyth County Sheriff’s report, Eric Doyle Mullis of Denson Drive crashed just before midnight near Heatherwyn Way.

The first 911 call reporting the collision came in at 11:55 p.m.

Sheriff’s Sgt. Chris Shelton said Mullis was traveling north on Tribble Gap at a high rate of speed when his 2006 Hyundai Tiburon left the road and struck a tree.

There were no passengers in the vehicle. Shelton said Mullis was not wearing a seatbelt and he was pronounced dead at the scene.

Authorities are awaiting toxicology reports to determine if alcohol or drugs were factors.

Forsyth County Schools spokeswoman Jennifer Caracciolo said Mullis was a former Forsyth Central High School student.

The crash is the third fatal wreck on county roads this year.

Authorities have said speed was a factor in a Jan. 22 single-vehicle crash that claimed the life of 44-year-old Lori A. Vlasic on Castleberry Road.

They have cited alcohol and speed as possible factors in a head-on collision Jan. 31 that resulted in the deaths of 48-year-old Ricky Joe Frady and 57-year-old Brenda Williams.

Williams’ granddaughter, 18-year-old Keisha Ray, and Hattie Lorene Skywark, 48, were injured in the wreck.

Frady was driving a 2007 Kia Sportage on Hwy. 53 near the Forsyth-Dawson County line when his vehicle was struck by a 2005 Dodge Stratus driven by Deborah Elaine Mace, 44, of Gainesville.

Authorities have said Mace, who was also injured, could face charges in connection with the wreck.

As of Tuesday, Sheriff’s Capt. Frank Huggins said authorities are awaiting a report from the state crime lab.