A 64-year-old Plaquemine man died late Thursday after his pickup ran off of La. 75 and hit a tree south of La. 3066 in Iberville Parish, State Police said.

Winsley J. St. Pierre Jr., who was unrestrained, suffered fatal injuries, Trooper First Class Jared L. Sandifer said in a press release.

Troopers began investigating shortly before 11:30 p.m. and determined St. Pierre southbound in his 1992 Ford F-150 when he failed to negotiate a left hand curve, and ran off the roadway to the right, Sandifer said.

A toxicology sample was taken from St. Pierre and submitted to the Louisiana State Police Crime Lab for analysis, Sandifer said.