Chad closed its border with Sudan on Monday and put a halt to bilateral trade, a minister said, a day after Sudan severed diplomatic ties with Chad.

Communications Minister Mahamat Hissene said that the Cabinet decided during a meeting chaired by President Idriss Deby to cut all economic ties with Sudan, including freezing the assets of a Sudanese bank in Chad and stopping all trade between the two countries.

The broadcast and sale of Sudanese music was also banned, Hissene said, reading a statement on state-owned television and radio.

The decision came a day after Sudanese President Omar al-Bashir severed diplomatic ties with Chad following a Saturday rebel attack near the Sudanese capital of Khartoum that al-Bashir says Chad supported.

The measures Chad took Monday go beyond any the central African nation has effected against Sudan since it severed diplomatic ties in April 2006 following a failed rebel attack on the Chadian capital, N'Djamena. Libyan and diplomatic efforts of other countries saw the two restore relations in August that year.

"After Sudan unilaterally broke ties, the Chadian government has a right to take all measures necessary to ensure the security of its territory and its citizens, protect its economic and cultural interests to avoid any surprise," said Hissene.

On Saturday, the Justice and Equality Movement rebel group launched an unprecedented attack near Khartoum, hundreds of miles from their bases in the country's far west.

The attack was the closest Darfur rebels have ever come to the seat of Sudan's government, which they accuse of marginalizing ethnic African minorities in Darfur and worsening the region's humanitarian crisis.

Copyright 2008 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.