Just before 5 p.m. on Feb. 26, the RCMP were called to the Dairy Queen on Tapton Avenue in Princeton, for a report of a stabbing in progress.
As police arrived at the location a man was observed holding a knife and he appeared to be cutting his own throat.
Two women were also located with stab wounds. The women have received medical attention for their injuries. The man who allegedly cut his own throat is in critical condition.
The scene was so horrific that the restaurant had to be closed so they could bring in a restoration crew for the clean-up.
RCMP from the Penticton Serious Crime Unit are looking after the file.
The investigation is in the early stages and no further details are available.
Anyone that may have witnessed this incident that has not yet spoken to an investigator is asked to contact police.