New Jersey officials have issued a mandatory quarantine order for members of a broadcast crew that was exposed to a cameraman with Ebola.

The order went into effect Friday night after they say a voluntary 21-day isolation agreement was violated.

Officials with the state Health Department told The Associated Press the crew remains symptom-free and there is no reason for concern of exposure to the deadly virus to the community.

Citing privacy concerns, department officials wouldn't give further details, including who violated the voluntary agreement and how the state learned of the violation.

The NBC crew included medical correspondent Nancy Snyderman, who lives in New Jersey. She was working with Ashoka Mukpo, a cameraman who was infected in West Africa. He is being treated in Nebraska.

An NBC representative told The AP it fully supports the guidelines set by local health authorities.