Photo: Oriol Junqueras (L) will remain in custody, while Carles Puigdemont (R) faces extradition hearings in Brussels. (File: Reuters: Albert Gea) Former Catalonia vice president Oriol Junqueras and three other pro-independence leaders faced with charges of sedition have been refused bail by Spain's Supreme Court. Six other former members of the Catalonia cabinet were set bail of more than $156,000 and ordered their passports to be confiscated. The politicians had been detained in custody ahead of an investigation into their part in an illegal declaration of independence by the then-regional government on October 27. The Catalan leaders, who held a slim parliamentary majority, arranged a vote on the region's secession — which was banned by the Constitutional Court — before declaring independence, forcing Madrid to disband the government and take control. In a court statement, the judge ruled that while he considered there was no risk those still in custody would leave the country, he did believe there was a risk of criminal reiteration. The court refused bail for Mr Junqueras, former cabinet member Joaquim Forn and two civil pro-independence leaders, Jordi Sanchez and Jordi Cuixart. The jailed leaders pledged last week to give up on efforts to seek independence for the wealthy Northeastern region, in the hope of being freed. Judge Pablo Llarena said in his decision it remained to be seen if Mr Junqueras' pledge to abide by Spanish law is "truthful and real". The politicians will campaign in the December 21 election called by Spain's Government in an attempt to find a democratic fix to the nation's worst institutional crisis in nearly four decades. Campaigning for the election, with Mr Junqueras at the head of the list for his ERC party, will begin this week. The election is seen as being another referendum on independence, with polls suggesting the result could be very close. Video: The moment Catalonia declared independence from Spain. (Photo: AP) (ABC News) Puidgemont faces extradition hearings Meanwhile in Belgium, ousted Catalan president Carles Puigdemont and four of his close separatist allies were set to appear in a Brussels court again for