Cuban activist Yunior García Aguilera blocked in his apartment before Monday’s protests

(CNN) – Government supporters blocked the apartment of Cuban activist and playwright Yunior García Aguilera in Havana ahead of an opposition protest march scheduled for Monday.

Several of the supporters told CNN that they would not allow him to carry out the march.

There was also a strong police presence that blocked the street in the neighborhood where García Aguilera lives.

In a live feed on Facebook from his apartment Sunday morning, Garcia Aguilera said he was “not allowed” to leave his apartment.

“I woke up besieged. The entire block is surrounded by State Security dressed in civilians who try to impersonate the people,” said García Aguilera.

Supporters of the playwright have since told CNN they believe the government cut off his communications.