JACKSONVILLE, Fla. -

A man was killed Sunday when the motorcycle he was riding crashed on the Southside, according to the Florida Highway Patrol.

It happened around 6 p.m. at University Boulevard And Harvin Road near Memorial Hospital.

Sgt. William Berger with FHP said the motorcycle was traveling south when, for unknown reason, it veered into the northbound lane and collided with a van that was making a left turn.

"The motorcyclist was ejected and came to rest on the sidewalk," Berger said. "The van stopped as quick as it could. The subject was transported to UF Health where he was later pronounced deceased."

Sunday night's motorcycle crash marks the fifth motorcycle crash in five days.

Wednesday morning, 47-year-old Steven Gott was killed when his motorcycle struck a railroad crossing arm as it was being tested on Zoo Parkway.

Thursday night, 22-year-old William Cooperlost died after losing control on Interstate 295 and hit a guard rail.

Friday morning, 25-year-old Michael Johnstone lost control on a ramp of the Acosta Bridge and was thrown over the side onto the train tracks below.  He died at the scene.

Later Friday morning, a car pulled in front of a motorcyclist at FSCJ North Campus.  The rider survived with serious injuries.

As for Sunday's accident, FHP says many questions still need to be answered.

"It's still under investigation. We're looking into everything," Berger said. "The driver of the motorcycle was not wearing a helmet. That would've contributed to some of his injuries."