A medical helicopter on a return flight after dropping off a patient crashed after take-off, killing the surgeon, nurse and pilot aboard, officials said Sunday.

The University of Wisconsin Hospital Med Flight helicopter was returning to Madison on Saturday night from the Gundersen Lutheran Medical Center in La Crosse when it crashed, UW hospital spokesman Aaron Conklin said.

There is one other Med Flight helicopter that serves the university hospital system and it has been grounded, Conklin said. The families of the victims have been notified, but the names were not immediately released.