European diplomats have been photographed at the home of a Nobel Prize-winning writer in Belarus after she said masked men tried to break in.
Svetlana Alexievich called journalists to her home on Wednesday after the incident.
She is the last leading member of the opposition Co-ordination Council still in Belarus who has not been detained.
The government has cracked down on dissent after protests swept the country following a disputed election.
Maria Kolesnikova, one of three women who joined forces to challenge authoritarian President Alexander Lukashenko in August's vote, is currently in detention after she resisted attempts by the authorities to expel her to Ukraine earlier this week.
Her lawyer told local news site Tut.by that she was being held on suspicion of calling for "the seizure of state power".