Hundreds of ultra-Orthdox Jews clashed with police in a conservative neighbourhood of Jerusalem on Wednesday as tax officials tried to carry out inspections, a police spokesman told AFP.
Micky Rosenfeld said several tax authority representatives entered the Mea Shearim neighbourhood on Wednesday morning to carry out "examinations, check-ups and closures" of several businesses.
"Disturbances developed involving representatives of the community. Stones and other objects were thrown at police officers," he said.
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"Four people have been arrested and police are still at the scene responding to the situation."
Rosenfeld said 200-300 protesters were still clashing with around 40 police on the scene.
Israeli media reported that the protesters were from the Neturei Karta movement, an ultra-Orthodox group that fiercely rejects the authority of the Jewish state.
The reports said that the tax inspectors were seeking to close down an illegal slaughterhouse in the neighbourhood.