ALLENTOWN, Pa. -

A homeless woman was killed when she was hit by an SUV Tuesday night,, and the woman's son assaulted the driver after the crash, police said.

Susan Thompson was hit around 8:45 p.m. as she was walking along Airport Road, police said.

After the accident, Thompson's son and another relative assaulted the driver, police said.

So far, no charges have been filed in the crash or the assault, but police said the investigation is ongoing.

The coroner has ruled Thompson's death an accident.