Ugandan scholar Stella Nyanzi was on Monday rushed to hospital after collapsing at the Central Police Station in the capital Kampala.
Dr Nyanzi had gone to the station to visit Makerere University students arrested in government crackdown on anti-social-media-tax protesters.
The controversial academic, who once called President Yoweri Museveni “a pair of buttocks”, was rushed to Naguru Police Hospital.
Police said they suspected she was suffering from hypertension.
The students, identified as David Musiri and Derrick Obedgui, stormed Parliament to demonstrate against the newly introduced USh200 social media tax.