A St. Martinville woman was killed early Saturday morning when her car suddenly veered off Southwest Evangeline Thruway and crashed into a traffic pole, Lafayette police said .

Tashawn Williams, 26, was headed south around 2:30 a.m. when she lost control of the car for unknown reasons in the 2000 block of Southwest Evangeline Thruway, said Cpl. Paul Mouton, a Lafayette Police spokesman.

Williams was pronounced dead at the scene. The crash is still being investigated, Mouton added.