Sri Lankan hospital staff carries a wounded child for treatment at the Kalubowila hospital in Colombo. (Xinhua/Reuters Photo)
Some vehicles were caught fire following the explosion.
Early on Wednesday, a female Tamil Tiger suicide bomber killed one people and injured two others after exploding herself near the office of Douglas Devananda, a pro-government Tamil politician and the minister of Social Services and Welfare.
Fortunately, Devananda himself escaped the suicide attack.
The two attacks came just one day after the LTTE supremo Velupillai Prabhakaran delivered his annual policy speech.
"Thousands of our fighters are standing ready to fight with determination for our just goal of freedom and we will overcome the hurdles before us and liberate our motherland," the LTTE leader said on Tuesday.
Claiming discrimination at the hands of the Sinhala majority, the LTTE has been fighting the government since the mid-1980s to establish a separate homeland for the minority Tamils in the north and east.
More than 5,000 people have been killed in the new wave of violence since the end of 2005.
(Xinhua News Agency November 29, 2007)