LAPLACE — A 66-year-old man was killed Friday night near LaPlace when a motorcycle he was operating crashed on Interstate 10, authorities said.

Louisiana State Police spokesman Evan Harrell said investigation revealed two motorcycles were traveling west on I-10 when the crash occurred. A 2015 Harley Davidson 3-wheel motorcycle, operated by Richard Kline, 62, of Pearl River was traveling staggered and next to a 2012 Cam Am 3-wheel motorcycle, operated by Louis Sevin Jr., 66, of Slidell.

As the motorcycles were traveling in the left lane, the Harley Davidson drifted to the right, and its rear tire made contact with the front left tire of the Cam Am.

“The contact caused the Harley Davidson to travel off the left side of the road at the same time the Cam Am traveled off the right side of I-10,” Harrell said. “Both operators were ejected from the motorcycles. Kline, who was wearing a US D.O.T. helmet, was transported to Our Lady of the Lake Hospital in Baton Rouge with serious injuries. Sevin, who was wearing a US D.O.T. helmet, was pronounced dead at the scene by the St. John Parish Coroner’s Office.”

The two-vehicle fatality occurred shortly before 7:30 p.m.

Impairment is not suspected as a factor in the crash, and toxicology tests are pending for Sevin. Blood was taken from Kline, and the test results will be pending at the Louisiana State Police Crime Lab, Harrell said.

This crash remains under investigation.