Several thousand ultra-orthodox Jewish Israelis demonstrated near the coastal city of Tel Aviv on Friday against construction work on a tramway during the Jewish Sabbath.
Protesters gathered quietly in Bnei Brak, an ultra-religious city on the outskirts of Tel Aviv, Israel's commercial capital, an AFP journalist said.
They were protesting against a court ruling this week which authorised the company building the tramway to work in the neighbourhood during the Sabbath.
Ultra-Orthodox Jews believe it is forbidden to work, drive or use electricity between dusk on Friday and dusk on Saturday.
Respect for the Sabbath -- a key issue for ultra-Orthodox parties which advocate a strict application of Jewish law -- has been a contentious issue within the government since its formation in 2015.
Around a fifth of deputies in Israel's ruling coalition, seen as the most right-wing administration in the country's history, come from the ultra-Orthodox Shas and United Tora Judaism parties.