Police launched a raid April 10 against a burlap bag factory on Istanbul's Anatolian side where workers have been organizing work stoppage actions that have been ongoing since February.
At least 91 people have been detained, while some have been transferred to the hospital for injuries, Doğan News Agency reported based on the workers' accounts.
Union representatives, including the Confederation of Progressive Trade Unions (DİSK) General Secretary Arzu Cerkezoglu, have gone to the factory following the intervention.
Workers of the Greif factory had initiallylaunched a strike on Nov. 9, 2013 to denounce the layoffs of co-workers, occupying a factory in the city's Esenyurt district.
A second work stoppage action was launched on Feb. 9 after workers refused the conditions put forward by the firm as part of a collective bargaining agreement and has been ongoing since.