A Kansas hospital system has identified three physicians as victims of a small plane crash in suburban Chicago.

Stormont-Vail HealthCare in Topeka said Monday that the victims of Sunday night’s plane crash included two of its doctors.

They were neurosurgeon Tausif Rehman and pulmonologist Ali A. Kanchwala.

Stormont-Vail also identified the third victim as Kanchwala’s wife. She was Maria Javaid, a cardiologist at the Providence Medical Center in Kansas City, Kansas.

The National Transportation Safety Board said there were no obvious reasons why their twin-engine Beechcraft Baron plane crashed in the Chicago suburb of Palos Hills shortly after a takeoff from Midway’s International Airport. The Federal Aviation Administration said the plane was flying to Lawrence, Kansas.

It crashed in a vacant lot on a street crowded with houses.