(AP) — Authorities are investigating a two-vehicle crash in Weeping Water that critically injured two people.

A man and a woman were flown to an Omaha hospital for treatment after the crash happened shortly after 1 p.m. Wednesday.

The man and woman were in a pickup truck that was towing a grain truck before the accident. The grain truck’s drive shaft fell and that caused the pickup to flip over.

The accident happened on state Highway 50 just north of state Spur 13K.

The names of the people injured in the crash weren’t immediately released.