Emergency crews, including one helicopter, responded to a two-vehicle crash that occurred at about 2:15 a.m. Sunday at 19th and Iowa in Lawrence.

Lawrence Police Sgt. Kirk Fultz said a Chevrolet Suburban T-boned an Acura, injuring three people. Fultz said police are still investigating the accident and have not determined who was at fault.

Lawrence Police were first to arrive on the scene and initially reported four people were injured. Two people were trapped and required extrication; their injuries were said to be critical, according to Journal-World news partner Operation 100 News.

Fultz said an ambulance drove a 17-year-old to Overland Park Regional Medical Center. An 18-year-old was flown to Kansas University Hospital. Both were passengers in the Acura.

Fultz said police arrested another person from the Acura after he fled the scene on foot. Fultz did not know if he was the driver.

One passenger from the Suburban was taken to Lawrence Memorial Hospital.

Two helicopters were initially dispatched to the scene, LifeStar and LifeFlight Eagle, but the request for the LifeFlight Eagle was canceled.

Fultz said he believed alcohol was a factor in the accident. Police have not released names of the victims, and their medical condition status is still not available as of late Sunday.