(CBS News) Cellphones provided condemning evidence Tuesday against former Fort Worth high school teacher Brittni Colleps, who is on trial for allegedly having sex with five of her students, CBS affiliate KENS reports.

Pictures: Notorious teacher sex scandals

Colleps, a 28-year-old mother of three and former English teacher at Kennedale High School, is accused of having group sex with four teenagers while another student videotaped the act with his cellphone, according to The Star-Telegram.

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