Primm, NV : 1 critically injured after 9-vehicle crash near Las Vegas on southbound Interstate 15 near Primm on Saturday, 5th January 2019

At least one person was critically injured Saturday in a crash involving two semitrucks and seven passenger vehicles on southbound Interstate 15 near Primm.
The crash was reported just after 8:10 a.m., causing a freeway closure in both directions for about an hour before northbound lanes reopened about 9:15 a.m., and all southbound lanes reopened about 5:45 p.m, according to a tweet from the Nevada Highway Patrol.Shortly before the crash, the California Highway Patrol had shut down southbound traffic on I-15 just south of Primm for a vehicle pursuit, creating heavy traffic congestion.
Highway Patrol Trooper Jason Buratczuk said Saturday afternoon that the vehicle involved in the pursuit did not cause the crash.
The chain-reaction of crashes that happened during traffic congestion was later caused by a semitruck who “failed to yield” to the slowed traffic, Buratczuk said.

Source