A memo sent to California police chiefs says Gov. Gavin Newsom will order all beaches and state parks closed starting Friday to curb the spread of the coronavirus.

The California Police Chiefs Association sent the bulletin to its members Wednesday evening, according to a memo obtained by CBS Los Angeles.

Association President Eric Nunez said it was sent to give chiefs time to plan ahead of Newsom's expected announcement Thursday.

Most state parks already are closed and many communities have shut their beaches. But some of those open in Ventura and Orange Counties attracted large crowds last weekend as temperatures soared, drawing Newsom's ire.

“This virus doesn’t take the weekends off. This virus doesn’t go home because it’s a beautiful sunny day around our coasts," he said in his Monday news conference.

He also called them an example of "what not to do" if the state wants to continue its progress in fighting the virus.

The memo also said that state parks staff would be on hand to assist, if necessary. The beach crackdown comes as some municipalities have begun to ease restrictions, with many Bay Area counties allowing more recreation facilities such as tennis courts and golf courses to re-open starting on Monday.

Newsom's order applies to state beaches and parks such as Pacifica, Half Moon Bay and Mount Tamalpais, but does not extend to parks run by other agencies such as Golden Gate Park, which is run by the city of San Francisco.