Four people were hurt in a head-on crash on Constitution Avenue and Trent Avenue, according to Colorado Springs police. 

Police said to cars were involved in the crash that happened at 3:30 p.m. Saturday.

Two people inside a white Chevy Impala are in critical and unstable condition according to police. Two people inside a truck that it hit are in serious condition.

Major accident units are investigating. Investigators are trying to determine why the eastbound car was in the westbound lanes of Constitution.