For the latest Oldham news sign up to the MyOldham newsletter here Protesters have gathered outside a factory in Oldham owned by an Israeli military technology firm.
Several people have been injured in the crowds, which formed outside Ferranti Technologies on Greenacres Road this morning on Monday (June 21).
Several windows have been smashed and the building has been vandalised with red paint. Flares have also been let off outside the site.
Four people have been treated for minor injuries at the scene, NWAS confirmed. Three men have also been arrested and remain in police custody for questioning.
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