Syrian state media say a bomb has exploded at the state television building in Damascus, wounding several people.
The station remained on the air Monday following the blast, which ripped through the third floor of the building.
A pro-government, private TV station, which itself was hit with a deadly blast in June, broadcast images of the building's damaged walls, wires dangling from a collapsed ceiling and people walking through smoke-filled hallways.
Syrian opposition activists are reporting continued attacks by government forces in the northern city of Aleppo Monday. The Syrian Observatory for Human Rights says the army is shelling several neighborhoods in Aleppo, and that at least two civilians have been killed.
The country's biggest city has become a key battleground in the uprising against President Bashar al-Assad's rule, as government forces are reported to have massed for what is expected to be a strong offensive against the opposition.
Meanwhile, U.S. senators John McCain, Joseph Lieberman and Lindsey Graham say the United States should provide direct assistance to the opposition, including weapons, intelligence and training.