GRAPHIC WARNING: Contains images which some viewers may find disturbing.

SANA via AP
Syrian security agents next to a vehicle on fire following a huge explosion in Damascus on Feb. 21, 2013.

SANA via Reuters
Vehicles burn near a crater on a road after an explosion in central Damascus on Feb. 21, 2013
By The Associated Press
The death toll is expected to rise in Damascus after a car bomb exploded near a security checkpoint in the downtown area of the Syrian capital. NBCNews.com's Dara Brown reports.
Syrian state TV says 53 people were killed and more than 200 wounded in a car bomb attack near the headquarters of the ruling Baath party in central Damascus.
The bomb was one of at least three attacks in the heart of the city on Thursday. A second blast shook another neighborhood and mortar rounds exploded near the Syrian Army General Command.
The Britain-based activist group the Syrian Observatory for Human Rights said 42 had been killed in the car bombing, most of them civilians.
The difference in the death tolls could not be immediately reconciled. Click here for updates on this developing story.
EDITOR'S NOTE: Pictures released by the state-run Syrian Arab News Agency.

SANA via EPA
A thick black pall of smoke fills the air close to the site of a large explosion in Damascus on Feb. 21, 2013.

SANA via EPA
Wounded men sit near destroyed cars and other damage following a large explosion in Damascus on Feb. 21, 2013.

SANA via AP
Syrian security agents carrying a body following a huge explosion that shook central Damascus on Feb. 21, 2013.

SANA via EPA
Clouds of smoke swirling around destroyed cars following a large explosion in Damascus on Feb. 21, 2013.

SANA via AP
An injured man lying on the ground after a huge explosion in Damascus on Feb. 21, 2013.
This story was originally published on Thu Feb 21, 2013 6:25 AM EST
