The Washington Metropolitan Police Department launched an investigation this week into whether Gregory and NBC violated city laws when he displayed what appeared to be a gun magazine on last week’s show. Today, the police issued a statement, saying NBC had been told before last Sunday’s show that it was “not permissible” to show a high-capacity gun magazine on air.

(See also on POLITICO: Cops told NBC not to use gun clips)

Gregory’s vacation was scheduled prior to last week’s show, according to NBC. He is scheduled to host the Jan. 5 edition of “Meet the Press.”