An appeals court in Belgium's northern port city of Antwerp upheld Wednesday a 12-year jail term and fine of 30,000 Euro ($33,000 US) for the leader of an Islamist group that sent jihadists to Syria, AFP reports.

Fouad Belkacem, 33, the chief of the Sharia4Belgium group who is serving his sentence in Belgium, was convicted in Antwerp in February last year of radicalising, recruiting and dispatching young men to wage holy war.

The appeals court in Antwerp also upheld jail terms of 12 years and fines of 30,000 Euro for two other Sharia4Belgium leaders, Said M'nari and Houssein Elouassaki, the Belga news agency reported.

The court also confirmed a jail term of four years and a fine of 15,000 Euro ($16,000 US) for Mohamed El Youssoufi, a member of the group.