By Mary Manning

Published Thursday, June 12, 2008 | 10:22 a.m.

Updated Tuesday, Oct. 28, 2008 | 10:15 a.m.

A woman killed in a three-vehicle crash involving an off-duty Nevada Highway Patrol trooper has been identified as 49-year-old Ying Warren of Las Vegas, the Clark County Coroner's office said today.

Two drivers involved in the wreck were taken to University Medical Center where they were treated and released, Metro Police said.

Metro investigators said that a medical problem linked to diabetes may have affected the trooper, 46-year-old Sgt. Edward Lattin, who is a supervisor for the NHP fatal accident investigation team.

Here is how Metro Police describe the crash:

The wreck occurred when a blue pickup truck heading south on Rainbow Boulevard struck a lightpole on a sidewalk, then crossed all three southbound travel lanes just north of Tropicana Avenue. When the pickup failed to slow down in the center two-way turn lane, it struck a Toyota driven by 50-year-old Manuel Ramirez of Las Vegas. Warren was a passenger in the 1991 Toyota Cressida.

As the pickup truck rolled onto the trunk and roof of the Toyota, the car rolled over once and was struck by a northbound Chevrolet S-10 pickup driven by 26-year-old Kevin Merrill of Las Vegas.

Merrill, Ramirez and Warren were taken to UMC, where Warren died a short time later.

Lattin voluntarily submitted to a blood test which has been submitted to Metro's crime lab for testing of alcohol and drugs, police said. A review of his medical records is part of the investigation, police said.

No criminal action has been taken as the investigation is ongoing. This is the 56th fatal accident in Metro's jurisdiction this year.