Suspected Tamil Tiger guerrillas detonated a bomb in Colombo 's commercial hub on Saturday wounding nearly 50 people, officials said. The bomb was concealed under a red satin-covered roadside stall displaying fake designer watches in the busy Pettah area of the capital, a short distance from the main bus station and the railway terminal. "We received 48 people injured in the blast," said Anil Jasinghe, a director of the Colombo National Hospital. "There are seven women and two children among the wounded," Jasinghe said, describing most of the injuries as "light to moderate." Most were leg wounds. There was no immediate claim of responsibility for the attack but President Mahinda Rajapakse's office said the separatist Liberation Tigers of Tamil Eelam (LTTE) guerrillas were believed to have carried out the bombing.