Two men were sent to hospital with serious injuries following an early morning plane crash just south of Lethbridge.

The crash happened just after 7:00 a.m. on Monday.

Witnesses say the ultra light aircraft was performing touch-and-go landing exercises in the moments before the plane came crashing down in a field.

Officials say that the plane was being flown by a flight instructor and a student and that the student was in control at the time of the crash.

The 46-year-old male pilot from Lethbridge was taken to Lethbridge Hospital for Surgery.

The 59-year-old male passenger from Picture Butte was transported to Foothills Hospital in Calgary.

Coaldale emergency crews were first to respond to the scene and say the plane hit the ground with significant impact.

"When I arrived on scene I found two occupants of the plane laying on the ground beside the plane, one crawled out on his own, the other was helped out by the landowner, he wanted out of the plane, both had very serious injuries," said Coaldale Fire Chief Andy Van Rijn.

Emergency crews continue to investigate the cause of the crash and no names have been released.