He added that the permits could be reinstated if the review process shows they were granted legally. Companies can also appeal to the courts.
When she announced the moratorium on the logging permits in January, Sirleaf also vowed to take action against those responsible for issuing them.
Chloe Fussell, campaigner for the watchdog group Global Witness, urged the government to pursue criminal prosecutions.
"I think what's really important now is that the companies who were responsible are actually prosecuted and stopped from operating in the country," she said.
In a June report, Global Witness said the failure of the government to enforce forestry laws was encouraging new forms of abuse in the wake of the PUP moratorium. In particular, the group warned about "large numbers" of applications under a separate program called Community Forest Management Agreements, which were also not intended for logging companies.
Fussell said Tuesday that none of those applications were currently being granted.
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Associated Press writer Robbie Corey-Boulet contributed to this report from Dakar, Senegal.