Peru's Fujimori returns to prison after hospitalization

"After overcoming serious health problems that forced him to have prolonged hospitalization, today President @albertofujimori is returning to prison," Alejandro Aguinaga said on Twitter.

The jailed former president was hospitalized last Saturday "with cardiac problems," Aguinaga announced earlier in the week.

He said Fujimori was undergoing tests after "suffering atrial fibrillation" or an irregular heartbeat, as well as from "pancreatic cysts."

Aguinaga said it was Fujimori's third hospitalization "in the last 40 days".

Between his frequent hospital visits, Fujimori has been serving out a 25-year sentence for human rights abuses in a specially outfitted cell at a police base in Lima.

A court ordered him back to prison in October last year, revoking a pardon granted by then-president Pedro Pablo Kuczynski the previous December.