Egypt's state Investment Authority says it will revoke the license of a private TV station that airs a popular satirist if he does not stop the use of "unacceptable and offensive" language.

The warning comes two days after the satirist, Bassem Youssef, was questioned by prosecutors over accusations that he insulted Islamist President Mohammed Morsi and Islam, and a day after the U.S. criticized the Egyptian government for a "disturbing trend" of growing restrictions on freedom of expression.

The Investment Authority said it has received complaints about Youssef's ridicule of "symbols of the nation" together with insults and sexual innuendos violating the operating license's conditions.