Uzbek President Shavkat Mirziyoyev has scrapped plans to curtail the autonomy of the country's Karakalpakstan region after a rare public protest in the northwestern autonomous republic, his office said Saturday.

Friday's rally was called to protest constitutional reform plans that would have changed the status of Karakalpakstan, an autonomous republic home to the Karakalpak people – an ethnic minority group with its own language, Uzbek authorities said.

Police dispersed the protesters after some of them tried to storm local government buildings in the region's capital, Nukus, following a march and a rally at the city's central market, local and government officials said.

Under the current Uzbek constitution, Karakalpakstan is described as a sovereign republic within Uzbekistan that has the right to secede by holding a referendum. The new version of the constitution – on which Uzbekistan plans to hold a referendum in the coming months – would no longer mention Karakalpakstan's sovereignty or right for secession.

But in a swift reaction to the protest, Mirziyoyev said Saturday during a visit to Karakalpakstan that the changes regarding its status must be dropped from the proposed reform, his office said in a statement.

Karakalpakstan's government said in a statement earlier on Saturday that police had detained the leaders of Friday's protest, and several other protesters who had put up resistance.

The changes concerning Karakalpakstan were part of a broader constitutional reform proposed by Mirziyoyev, which also includes strengthening civil rights and extending the presidential term to seven years from five.

If the reform is endorsed in the planned referendum, it would reset Mirziyoyev's term count and allow him to run for two more terms.