Three people died Friday in a fire in west suburban unincorporated Elmhurst.

About 9:30 p.m., DuPage County sheriff’s deputies arrived to a house fire in the 3N300 block of Willow Road and found two males and one female who had been found dead by the Elmhurst Fire Department, the sheriff’s office said.

An investigation into the cause of the fire is underway, the sheriff’s office said.