Gao Chengyong pleaded guilty to killing 10 women and an 8-year-old girl over a period of 14 years across northern China, his lawyer said on Wednesday after a two-day trial.

The hearing was held behind closed doors at Baiyin Intermediate People's Court in Gansu province. The 52-year-old accused serial killer confessed to multiple charges of homicide, rape, robbery and mutilation of corpses, according to attorney Zhu Aimin.

"Gao confessed to all 11 murders," Zhu said by phone on Wednesday evening.