A medical helicopter responding to the scene of a fatal accident in southwestern Ohio crashed early Tuesday when it apparently hit some power lines, authorities said.

It was not immediately clear how many people were aboard the helicopter or if any them were injured, authorities said.

The helicopter was responding to a two-vehicle accident that occurred around 4:15 a.m. in Milford Township. The helicopter crash occurred a short time later.

OHIO SHERIFF'S DEPUTY FATALLY WOUNDED IN SHOOTING INSIDE MOBILE HOME

Columbus, Cincinnati, Cleveland news

An Ohio medical helicopter crashed on the way to a car accident.

OHIO 16-YEAR-OLD BOY WANTED IN KILLING MOM OF FIVE KIDS CAUGHT IN CROSSFIRE

Authorities said one person was killed in the vehicle crash and three others were injured. The cause of that accident remains under investigation.