One person has been killed and five others injured in an attack outside an Orlando supermarket, authorities said.

Orlando police spokeswoman Barbara Jones said one person was fatally stabbed Monday morning in a parking lot. Four others were taken to a hospital.

One is in critical condition and another is in surgery. The conditions for the others involved are not yet known.

Jones said one person was treated at the scene. All appeared to have some injury from cutting.

It's not yet clear what prompted the fight. No arrests have been made.