At least four Russians have been detained for donating to jailed Kremlin critic Alexei Navalnys extremist organizations, state and independent mediareported Wednesday.Law enforcement officers carried out searches in connection with financing Navalnys groups in the Russian cities of Nizhny Novgorod, Moscow and Krasnoyarsk, according to the independent human rights watchdog OVD-Info.The watchdog identified the detained men as Nizhny Novgorod residents Gleb and Dmitry Kalinychev, Moscow resident Ilya Startsev and Krasnoyarsk resident Andrei Novokreshchenykh.A Russian court in June 2021 blacklisted Navalnys political and activist networks as extremist.Financing an extremist group carries a punishment of up to 8 years in prison.Kalinychev is set to be transported to a local Federal Security Service (FSB) office and will face a court decision on his pre-trial detention on Thursday, OVD-Info said.Video shared by the state-run broadcaster RTshowed uniformed agents handcuffing Novokreshchenykh in the Siberian city of Krasnoyarsk and leading him to an apartment building.The reports did not disclose the amount of money that was said to have been donated to Navalnys networks, including the Anti-Corruption Foundation (ACF).An August 2022 report on a similar arrest said that prominent plagiarism campaigner and journalist Andrei Zayakin haddonatedas little as 1,000 rubles ($10) to ACF.Citing anonymous sources, RTreported that it expects more arrests of Navalnys supporters.A body of evidence is now being formed against other sponsors of ACF and participants in its projects, including Navalnys so-called underground campaign offices, RT wrote.