All lanes are now open on northbound Lake Shore Drive following an earlier fatal crash.
One person was killed and three others were seriously injured after a wrong-way accident early Monday morning.
A man was driving southbound in the northbound lanes when he crashed into two cars in the 4100 block of South Lake Shore Drive around 2:40 a.m.
He was killed.
Police believe the accident may have been alcohol related. Investigators are waiting on autopsy results to determine if the wrong way driver was under the influence.
Six other people were injured with two going to Northwestern Memorial Hospital in serious-to-critical condition, and another going to John H. Stroger hospital in serious-to-critical condition Chicago Fire officials said.
Three people refused treatment at the scene.