Ugandan police returned opposition leader Bobi Wine to his home and encircled the property hours after arresting him during a protest over human-rights abuses by security agents against his supporters.

The politician — whose real name is Robert Kyagulanyi — was “arrested as he led MPs and other leaders in a peaceful protest against the abduction, torture and murder of his supporters,” an administrator posted on Bobi Wine’s Twitter account.

“The right to protest peacefully is a fundamental human right. We are protesting for hundreds of missing Ugandans whose families have not heard from them for months! Those who have showed up have been grossly tortured — castrated, fingernails plucked out, eyes smashed,” according to another tweet on Wine’s account.

Police spokesman Fred Enanga didn’t answer calls to his mobile phone seeking comment.

Wine, 38, was runner-up during presidential elections in January that handed the victory to President Yoweri Museveni for a sixth term. Police had the opposition leader under house arrest for 11 days following that vote until a High Court judge ruled that the confinement was illegal.