LAFAYETTE — State Police say they suspect a woman from Sunset was driving a 2005 GMC Yukon too fast when she ran off the road and into a St. Landry Parish tree Tuesday morning.

Investigators on Tuesday afternoon were trying to determine exactly when the crash that killed Chastity Nichol, 34, occurred, Trooper Stephen Hammons said in a news release.

Hammons said Nichol was driving east on La. 356, left the road in a curve, crossed a private driveway and then crashed into a tree.

Nichol, who was wearing a seat belt, was pronounced dead at the scene, Hammons said.

“Troopers suspect speed was a factor,” Hammons said.

He said the crash remains under investigation.