Ms Ingabire is banned from leaving Kigali
A Rwandan opposition leader has been conditionally released after being arrested on Wednesday.
Victoire Ingabire Umuhoza was accused of collaborating with a terrorist group and denying the genocide.
Ms Ingabire, who plans to challenge President Paul Kagame in August's election, has been ordered to report to the authorities twice a month.
She is also banned from leaving the capital city, a Kigali court ruled on Thursday.
Ms Ingabire, an ethnic Hutu, was said to be propagating genocide ideology after she called for action to be taken against those responsible for killing Hutus during the 1994 conflict.
The majority of those killed in the genocide were Tutsis.
President Kagame is a Tutsi former rebel leader who came to power to end the killings. His forces have been accused of massacring Hutus after the genocide ended.
A police spokesperson said she had committed serious crimes.
Ms Ingabire, who leads the Unified Democratic Forces party, has previously said she had been harassed since returning from exile in January.
Correspondents say the travel restrictions imposed on her could have a severe impact on her campaign.
President Paul Kagame has said in the past he respects people's rights but will not tolerate anyone undermining peace and stability.