BROWN COUNTY, S.D. (KELO) — Authorities are investigating a deadly small plane crash that happened north of Groton, South Dakota.

According to Dave Lunzman, Chief Deputy for the Brown County Sheriff’s Office, a plane crashed near the Groton Municipal Airport around 11 a.m. Sunday.

Lunzman says a man and a woman were on board. Both the pilot and the passenger died as a result of the crash. He says the pilot and the passenger were married.

This is a developing story. Stay with KELOLAND News on-air and online for the latest details.