Thai Prime Minister Abhisit Vejjajiva warned anti-government protesters on Sunday that there was a risk of "losses" if they did not end a rally that has closed down a shopping district in Bangkok for a month. "From now on, what the government will do may risk clashes and losses, but the government knows what it's doing. What needs to be done must be done," he said, speaking on his normal Sunday morning television slot.
It was not clear what Abhisit meant by "losses".
He has called an emergency cabinet meeting for later on Sunday.
Late on Saturday Army spokesman Sansern Kaewkamnerd told reporters the government had ordered police to regain an area around Chulalongkorn Hospital, near the Silom business district, to ensure public safety.
"Red shirt" demonstrators, supporters of ousted premier Thaksin Shinawatra pushing for new elections, caused outrage when about 200 of them barged into the hospital grounds on Thursday, looking for soldiers they thought were preparing an attack.