6 referees sent home from NCAA Tournament due to COVID-19 protocols

INDIANAPOLIS (CBS 58) -- Several referees were sent home from the NCAA men's college basketball tournament's controlled environment in Indianapolis, due to a positive COVID-19 test. 

NCAA officials say one referee tested positive Monday, and had interacted with five other officials. 

All six were sent home. 

A CBS Sports report says among those sent home include Ted Valentine, John Higgins, Kipp Kissinger and Roger Ayers.

Four of the refs have been replaced from a pool of reserves and two won't be replaced.