UMPIRE, Ark. (AP) — An official with the Federal Aviation Administration says four people are dead after a small airplane crashed in southwest Arkansas.

FAA spokeswoman Elizabeth Isham Cory said the single-engine plane took off Sunday morning from DeQueen and was headed to an airport in north Arkansas or southern Missouri with four people on board.

She said all four were killed when the plane crashed near Umpire in Howard County, about 90 miles north of Texarkana.

Howard County Sheriff Butch Morris said the plane went down about 9:30 a.m. in a remote, wooded portion of the Howard County Wildlife Management Area. He said a woman called the sheriff's office saying she heard a plane flying low over her house and then a "thud."

Morris said the cause of the crash was still unknown.