This is a developing story.

A Juneau man operating a motorcycle died Tuesday evening after striking a tour bus that was making a left turn downtown.

Cramer Marquez Sexton, 48, was pronounced dead on the scene by emergency personnel after being involved in a crash at Egan Drive and Whittier Street.

Police received a call at 5:44 p.m. that a crash had occurred between a motorcycle driving outbound on Egan Drive and a tour bus turning left onto Whittier Street as it headed inbound on Egan Drive, said Lt. Krag Campbell in a news release. Witnesses reported Sexton was dead.

Witnesses in the preliminary investigation said that Sexton, traveling at a high rate of speed in the left-hand lane of Egan Drive, struck the side of the bus as it turned, Campbell said. The bus, operated by Glacier Express, was being driven by a 66-year-old Juneau man, who police did not identify.

The occupants of the bus were uninjured during the crash, Campbell said. Officers shut down outbound lanes of Egan Drive while conducting the preliminary crash investigation, Campbell said.

Sexton’s body will be flown to the medical examiner’s office in Anchorage for autopsy, Campbell said, as the JPD investigation into the crash continues.

• Contact reporter Michael S. Lockett at 757-621-1197 or mlockett@juneauempire.com.