Police arrested a 20-year-old driver Thursday night after he allegedly struck a bicyclist while the driver was reportedly racing with another car on Tantalus Drive in Makiki Valley.

At about 5:30 p.m. Thursday, police said a Nissan sedan operated by the suspect was “drifting” and racing with another vehicle up Tantalus Drive when he lost control and veered on the opposite side of the roadway near the third lookout.

He struck the bicyclist, a 33-year-old woman identified as Lectie Altman, who was traveling down the roadway.

Altman, a triathlete, sustained severe injuries and was transported to a trauma center in critical condition.

Police arrested the 20-year-old man on suspicion of first-degree negligent injury.

The investigation is ongoing.

A GoFundMe account has been created on Altman’s behalf. Those interested in making a donation may visit: https://www.gofundme.com/lectie-altman-fund.