An Algerian appeals court has upheld sentences of over ten years in prison for two former prime ministers under ex-president Abdelaziz Bouteflika following an unprecedented corruption trial, a judicial source said Wednesday. The Algiers court sentenced Ahmed Ouyahia and Abdelmalek Sellal to 15 and 12 years jail time respectively, confirming a ruling by a lower court on December 10 last year. The two premiers had served under Bouteflika, who was forced to resign in April last year by enormous street protests against his bid for a fifth term in office. They were the first former prime ministers to be put on trial since Algerias independence from France in 1962. "This verdict on appeal is still a political ruling," Sellals lawyer Mourad Khader told AFP. They now have eight days to appeal to the Supreme Court. Scandals within Algerias auto industry -- including murky funding for Bouteflikas aborted re-election bid -- were at the heart of the case, which also resulted in prison terms for other former ministers and businessmen close to the ex-presidents regime. Financing for the longtime leaders campaign had "cost the treasury an estimated 110 billion dinars (more than to $890 million)", the prosecutor said. The auto industry scandal led to the loss of an estimated 128 billion dinars of public funds, according to official figures. Other rulings handed down by the appeal court reduced sentences for former Algerian ministers and businessmen also standing trial. Two former industry ministers, Mahdjoub Bedda and Youcef Yousfi, initially sentenced to ten years in prison, had their jail terms halved. Businessman Ali Haddad, founder and CEO of private construction firm ETRHB and former head of Algerias main employers organization who was considered a principal funder of Bouteflikas last electoral campaign, had his seven-year prison sentence reduced to four. But for his lawyer Khaled Bourayou, it was still an "unjustifiable verdict". "As long as justice is instrumentalized, we cant expect anything else," he said of the ruling, adding that the plaintiffs will appeal to the supreme court. Two owners of vehicle assembly plants, Hassen Arbaoui and Mohamed Bairi, received sentences of four and three years in prison respectively. Since March 1, around twenty former politicians, powerful businessmen and senior officials have been judged on appeal in corruption cases. Other trials await some defendants named in the wide-ranging investigations into alleged corruption that were launched after Bouteflikas departure. Huge protests against cronyism have continued in Algeria despite Bouteflikas resignation and the election of a new president in December, with activists demanding a complete overhaul of the political system and removal of Bouteflika-era figures. While some have welcomed the trials of figures in his entourage, including his powerful brother Said and two former intelligence chiefs, many fear that they amount to little more than a power struggle between regime "clans".