A 28-year-old motorcyclist was hospitalized in serious condition after colliding with a Honolulu police officer’s vehicle late Tuesday night in Kakaako, police said.

Honolulu police said around 11:30 p.m. Tuesday, HPD officers were searching the Ala Moana Beach Park area for assault suspects when a 911 caller reported four e-bike riders as possible suspects.

Officers attempted to stop the group, HPD said, when one of the riders, a 28-year-old man on an electric motorcycle, turned onto Ala Moana Boulevard from Ilalo Street and struck an officer’s vehicle who was traveling eastbound on Ala Moana Boulevard.

The crash occurred around 11:41 p.m. on Ala Moana Boulevard near Ilalo Street and the impact ejected the motorcyclist onto the road, according to HPD’s Traffic Division, Vehicular Homicide Section.

The man, who was not wearing a helmet, was transported to a nearby hospital in serious condition. He was later arrested and charged for obedience to police officer.

The officer was treated and released for minor injury, HPD said.

Investigators said speed, drugs and alcohol do not appear to be factors in the crash. The investigation remains ongoing.