The investigation was carried out by specialist officers at Greater Manchester Police
A former supply teacher has been charged with child sex offences including upskirting in schools and voyeurism.
Abusali Rahman, 36, was arrested in June 2025 after a concern was raised by a parent about an image of their child in school uniform being circulated by a social media account.
The offences are alleged to have taken place in Greater Manchester between December 2023 and June 2025.
Greater Manchester Police (GMP) said Rahman, a British national of Bangladeshi ethnicity from Salford, had been remanded in custody and would appear at Bolton Crown Court on 28 May.
Thirteen girls – aged between 13 and 16 at the time – have been identified as alleged victims at seven high schools in Bury, Bolton and Salford.
GMP said the girls' parents and their schools had been informed.
However, four girls from two high schools have not yet been identified.
Det Ch Supt Rebecca McKendrick, head of the force's public protection division, said: "I must start by stressing that the parents of the girls identified, and their schools, are being kept informed and supported throughout this process.
"We have been in contact with all schools we know Mr Rahman worked at in the North West since he became a qualified teacher in July 2023.
"No further alleged criminal offences have been identified at this time."
Det Ch Supt McKendrick added that she understood the concern and upset that would come with this news.
"It is so important that everyone refrains from speculation as this is an active case where the girls affected have a right to lifelong anonymity and the defendant has a right to a fair trial.
"The last thing that is needed now is speculation around this case – if you know something, please report it directly to us."
Rahman has been charged with:
12 counts of taking an indecent photograph/pseudo-photograph of a child, namely images obtained by upskirting
Three counts of publishing an obscene article, namely AI-generated sexualised images
Three counts of making indecent photograph/pseudo-photograph of a child, namely making AI-generated images
One count of distributing an indecent photograph/pseudo-photograph of a child, namely sharing an upskirting image with another user
One count of attempting to meet a girl under 16 following sexual grooming via online chat
One count of operating equipment beneath clothing of another without consent, namely the act of upskirting
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