Prosecutors last year have intensified supervision over police and judicial systems to prevent miscarriages in justice, according to an annual work report of the Supreme People's Procuratorate (SPP) released on Sunday.

In 2015, prosecutors across the country went against 6,591 wrong criminal judgments made by courts and protested 3,548 court verdicts or mediations involving civil and administrative cases, according to the SPP.

According to Chinese laws, prosecuting authorities have the right and obligation to supervise police and judges to ensure justice.

In recent years, unjust and wrong cases were constantly found, exposing loopholes in law enforcement. Such cases have seriously violated people's legitimate rights and harmed judicial credibility.

According to the report, last year prosecutors found and corrected 31,874?behaviors in which police authorities illegally detained suspects or used illegal means to obtain evidences.

In addition, prosecutors rejected police arrest applications on 131,675 suspects due to insufficient evidences, up 11.5 percent year-on-year. Chinese law requires all formal arrests be approved by prosecuting authorities.

In 2015, prosecutors also conducted comprehensive investigations on the commutation and conditional release of prisoners, urging prison management authorities to bring 1,063 convicts back to prison, mostly wealthy or ex-officials.

Zhangyan1@chinadaily.com.cn