The woman, whom the public prosecutor named as Mona Mohammed, said in the report that security forces had forcibly disappeared her daughter last year, causing a strong backlash this week from Egyptian authorities.
The daughter was then interviewed on a nightly talk show days later where she denied the claim. Reuters was not able independently to verify either account.
The public prosecutor ordered Mohammed to be detained for 15 days pending investigations, the statement said. It said Mohammed had already been arrested by security forces in the days after the BBC report was published.
Egypt’s government press center said this week the BBC report was “fraught with lies” and called for a boycott of the British broadcaster. The BBC said: “We are aware of the reports about this BBC story on Egyptian TV and of the comments of the head of the State Information Service. We stand by the integrity of our reporting teams.”
Egypt has stepped up a crackdown on media outlets it deems to be publishing reports which might harm national security, as the country approaches a presidential election where President Abdel Fattah El-Sisi is virtually guaranteed a second term, and the military fights to crush terrorists in the Sinai Peninsula.
The public prosecutor earlier this week urged action against outlets publishing what it called false news, and El-Sisi said defamation of the army or police was tantamount to treason.