Egyptian authorities have shut down the headquarters of the Muslim Brotherhood's Freedom and Justice newspaper in Cairo.
The Brotherhood condemned the move and described it as the latest attempt aimed at crushing the Islamist movement.
Police stormed the newspaper's offices overnight and removed the contents.
A source at the Cairo Security Department said the raid followed Monday's court ruling that banned the Brotherhood and ordered its funds seized.
"A court ruling was issued to do it on charges of inciting violence and terrorism in the recent past," a security source said, referring to the operation.
The army overthrew former president Mohammed Mursi in July, and the Brotherhood has seen hundreds of its members killed and thousands arrested since then.
The campaign had forced many of the 50 journalists who produced the daily Freedom and Justice to work in secret to avoid arrest.
The newspaper, named after the Brotherhood's political wing, had focused on efforts to reverse what it called a military coup against an elected government.
The Brotherhood emerged from the shadows to win parliamentary and presidential elections after Hosni Mubarak was overthrown in 2011.
Many Egyptians became disillusioned with Mr Mursi after he gave himself sweeping powers and they took to the streets in protest, prompting the army move.