LAPLACE — A pedestrian was killed Sunday in LaPlace when struck by a vehicle along U.S. 51, authorities said.

The crash claimed the life of 32-year-old Mona Lisa Hernandez of Houston, according to Louisiana State Police said.

The preliminary investigation revealed the crash occurred shortly before 5:30 a.m. as Hernandez was attempting to cross U.S. 51.

At the same time, 30-year-old Daniel Penton of Hammond was driving a 2015 Chevrolet Sonic southbound on U.S. 51. As Hernandez was crossing the roadway she was struck by the southbound Chevrolet.

Hernandez sustained fatal injuries as a result of the crash, and was pronounced deceased on scene by the St. John Parish Coroner’s Office.

Impairment on her part may have been a factor, State Police said, and a toxicology sample was obtained from Hernandez and submitted to the Louisiana State Police Crime Lab for analysis.

Penton was properly restrained and was uninjured.

Impairment on his part was not suspected, and per standard procedure submitted to a chemical test for intoxication, the results of which were negative.

This crash remains under investigation.