After more than two decades on the run, the last suspect in the nation's largest armored car robbery has been detained by police.

Police in Guangzhou, Guangdong province, successfully detained the suspect, Chen Xumin, in a market in Ruili, Yunnan province, in cooperation with local police on Thursday afternoon, according to the Guangzhou bureau of public security.

Chen was escorted back to Guangzhou by police by train from Yunnan province on Friday, police said.