Four people were killed Friday when a small plane crashed in Harrisburg, Ore.

Axar.az reports, the Federal Aviation Administration (FAA) said a single-engine Piper PA46 crashed under unknown circumstances about 5 miles east of Mahlon Sweet Field Airport in Linn County at around 11 a.m. local time.

The Register-Guard newspaper reports the plane was approaching the Eugene Airport when it crashed about 10 miles (16 kilometers) north of the airport.

The Linn County Sheriff's Office told FOX 12 that it received reports of the plane flying low, but the callers did not report signs of mechanical issues.

Marty Nill, who operates a private airfield near Harrisburg with his brother, told the Associated Press in a phone interview that conditions were very windy. However, investigators are not yet sure what role the high winds played in the crash, if any.