(AP) — A plane carrying a pilot and 11 passengers on a skydiving outing in the US state of Missouri crashed in a field and was engulfed in flames Sunday, killing all aboard, authorities said.

The crash happened shortly after the plane took off from a local airport around 11:30 a.m., and some of the occupants' family members witnessed the crash, said Bates County Sheriff Chad Anderson.

A heap of blue and silver mangled metal lay in the grass near Butler Memorial Airport with a massive lineup of emergency vehicles gathered on a nearby street. Clergy and volunteers went to the site to assist relatives, Anderson said, and officials were working Sunday afternoon to identify all victims and notify their next of kin.