Five Las Vegas-area high schools are being sanitized after norovirus broke out among people using the facilities for a youth football tournament.

And tests confirm several guests at the Rio All-Suites Hotel and Casino were sent to hospital and diagnosed with norovirus.

They were also part of that football tourney.

A spokesperson for the Rio hotel-casino said Monday the property believes the cause of the illness did not come from any of its food outlets after inspections were made.

The spokesperson said some of the people associated with the football teams told the property some of the parents brought sick children with them. The hotel also mentioned assisting those affected with the illness with free transportation to local healthcare facilities as well as care packages.