Frank Chikowore, who reports primarily for Zimbabwe's Independent newspaper, spent 17 days in prison after being arrested for attempting to interview MDC officials after the March election. MDC candidate Morgan Tsvangirai won the most votes in that election, though he did not receive enough to avoid a runoff with Mugabe, who finished second.
"I was deprived [of] food for the first seven days of my captivity and put in isolation for the remaining days," he told ABC News.
He's now facing a charge of public violence. If convicted, he says he could serve five to six years in prison.
Mugabe, who has ruled Zimbabwe since the country received independence from Britain in 1980, has denied reports of any violence and has accused civil society groups as well as presidential candidate Morgan Tsvangirai and his party, MDC, of being puppets of the West.
He has vowed that Zimbabwe will not return to "imperialist rule," and warns that there will be war if MDC wins.
Chikowore told ABC News that the irony of Mugabe's rhetoric is that his actions have turned the former freedom fighter into the oppressor of his own people.
Pointing to the history of repression under former president Ian Smith's white-rule regime, Chikowore said that now, "it's a brother-kill-brother situation."
The Associated Press contributed to the reporting of this story.