All demonstrations are banned and only state television can broadcast news.
President Mikhail Saakashvili imposed the 15-day emergency after six days of opposition rallies, saying "Russian special services" were behind unrest.
The US later called for calm and for the Georgian government and opposition leaders to negotiate.
The EU foreign policy chief, Javier Solana, urged restraint from both sides, saying "political differences should be resolved within the democratic institutions".
The state of emergency was initially announced in Tbilisi for 48 hours, but that was later extended to the whole country for 15 days.
Imedi TV, which has broadcast statements by opposition leaders, stopped broadcasting on Wednesday, after riot police entered its premises.
clipped from: news.bbc.co.uk 