Six teenagers were arrested for vandalising an Islamic school in Newcastle where windows were smashed and copies of the Quran were ripped up.
Police are treating the incident at Bahr Academy as a hate crime.
Northumbria Police said that significant damage was caused at the Islamic school, which is located at the former set of children’s TV show Byker Grove.
Another break-in took place at the academy in January, but the offenders were never caught.
An 18-year-old woman, two 16-year-old boys, two 14-year-old boys and a 14-year-old girl were arrested and taken into custody after Monday’s incident, police said.
Neighbourhood inspector Alan Davison said: “This is a very distressing incident for members of the Bahr Academy, particularly as it is the second break-in this year.
“Although there is not the same racist graffiti as we saw in the first incident, we are treating this as a hate crime.
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“We are aware of the impact incidents of this nature can have on the community and I want to be clear that this type of behaviour is completely unacceptable.”
Officers have been carrying out high visibility patrols next to the academy.