Two people were taken to area hospitals after a traffic collision that closed part of Newport Boulevard in Costa Mesa for hours on Friday, police said.
Costa Mesa police issued a Nixle alert shortly after 10 a.m. warning residents of the closure of northbound Newport Boulevard between 20th and Bay streets and urging motorists to avoid the area. The stretch was closed to traffic until about 3:45 p.m., police said.
The Costa Mesa Fire & Rescue Department also responded to the scene after receiving a call at about 9:45 a.m., according to department spokesman Joe Noceti.
A truck and a sedan were among three vehicles involved in the collision, authorities said.
The driver of the truck suffered cardiac arrest at the scene and was taken to Orange County Global Medical Center in Santa Ana in critical condition, Noceti said.
Another driver was taken to a hospital for treatment of minor injuries.
Police were still investigating the cause of the crash as of Friday afternoon.
This article was originally published at 11 a.m. and was later updated with additional information.